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HomeMy WebLinkAbout19920769 Ver al_Complete File_19920415DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEE P.O. BOX 1890 WILMINGTON, NORTH CAROLINA 28402-1890 IN REPLY REFER TO April 1, 1992 Regulatory Branch Action ID. 199201173 and Nationwide Permit No. 23 (Approved Categorical Exclusions) Mr. L. J. Ward, Manager Planning and Environmental Branch Division of Highways North Carolina Department of Transportation Post Office Box 25201 Raleigh, North Carolina 27611-5201 Dear Mr. Ward: D APR 151992 1 _ Reference is made to your letter of February 11, 1992, regarding your plans to discharge dredged/fill material in the waters/wetlands of Blanket Creek, associated with the replacement of the Blanket Creek Bridge (Bridge No. 100), S.R. 1101, located north of Clemmons, Forsyth County, North Carolina, State Project No. 6.503218, I. D. No. B-2035. Plans included with your letter showed that you propose to replace the aforementioned bridge with a two barrel box culvert. For the purposes of the Corps of Engineers' Regulatory Program, Title 33, Code of Federal Regulations (CFR), Part 330.6, published in the Federal Register on November 22, 1991, lists nationwide permits. Authorization, pursuant to Section 10 of the Rivers and Harbors Act of 1899 and Section 404 of the Clean Water Act, was provided for activities undertaken, assisted, authorized, regulated, funded or financed, in whole or in part, by another Federal agency or department where that agency or department has determined, pursuant to the CEQ Regulation for the Implementing the Procedural Provisions of the National Environmental Policy Act, that the activity, work or discharge is categorically excluded from environmental documentation because it is included within a category of actions which neither individually nor cumulatively have a significant effect on the human environment, and the Office of the Chief of Engineers has been furnished notice of the agency's or department's application for the categorical exclusion and concurs with that determination. Your work is authorized by this nationwide permit provided it is accomplished in strict accordance with the enclosed conditions. This nationwide permit does not relieve you of the responsibility to obtain any required State or local approval. This verification will be valid for 2 years from the date of this letter unless the nationwide authorization is modified, reissued, or revoked. Also, this verification will remain valid for the 2 years if, during that period, the nationwide permit authorization is reissued without modification or the activity complies with any subsequent modification of the nationwide permit authorization. If during the 2 years, the nationwide permit authorization expires or is suspended or revoked, or is modified, such that the activity P ri s 4 -2- would no longer comply with the terms and conditions of the nationwide permit, activities which have commenced (i.e., are under construction) or are under contract to commence in reliance upon the nationwide permit will remain authorized provided the activity is completed within 12 months of the date of the nationwide permit's expiration, modification or revocation, unless discretionary authority has been exercised on a case-by-case basis to modify, suspend, or revoke the authorization. Questions or comments may be addressed to Mr. John Thomas at the Raleigh Field Office, telephone (919) 846-0648. sincerely, G. Wayne Wright Chief, Regulatory Branch Enclosure Copy Furnished (without enclosure): Mr. John Parker North Carolina Department of Environment, Health and Natural Resources Post Office Box 27687 Raleigh, North Carolina 27611-7687 Copy Furnished(with incoming correspondence): Mr. John Dorney Water/Quality section D vision of Environmental Management orth Carolina Department of Environment, Health and Natural Resources Post Office Box 27687 Raleigh, North Carolina 27611-7687 STATE °5 5 EWEI) Fr,?0i.? STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION i,•,, f P.O. BOX 25201 RALEIGH 27611-5201 JAMES G. MARTIN GOVERNOR THOMAS J. HARRELSON SECRETARY DIVISION OF HIGHWAYS February 11, 1992 WILLIAM G. MARLEY, JR., P.E. STATE HIGHWAY ADMINISTRATOR District Engineer Army Corps of Engineers P. 0. Box 1890 Wilmington, North Carolina 28402 ATTENTION: Regulatory Branch Dear Sir: Subject: Categorical Exclusion Approval for Federal Aid Project: Forsyth County, SR 1101, Bridge No. 100 over Blanket Creek, State Project No. 6.503218, I. D. No. B-2035 Attached for your information is a copy of the project planning report for the subject project. The project is being processed by the Federal Highway Adminis- tration as a "Categorical Exclusion" in accordance with 23 CFR 771.115(b). Therefore, we do not anticipate requesting an individual permit but propose to proceed under a Nationwide Permit in accordance with Section 330.5(a)(23) of the Interim Final Rule for Regulatory Programs issued July 22, 1982, by the Corps of Engineers. The provisions of Section 330.5(b) and 330.6 of these regulations will be followed in the construction of the project. We anticipate that a permit will be required from the North Carolina Department of Environment, Health and Natural Resources for this project. DOT will apply directly to NRCD for that permit when plans have been developed. If you have any questions or need additional information, please call me at 733-3141. Sincerely, ?.om L. J. Ward, P. E., Manager LJW/plr Planning and Environmental Branch Attachment cc: Mr. John Parker, Permit Coordinator, w/report Mr. Charles Wakild, Environmental Management, w/report Mr. C. W. Leggett, P. E. Mr. J. T. Peacock, Jr., P. E. Mr. A. L. Hankins, Jr., P. E. Mr. D. B. Waters Forsyth County, Bridge No. 100 on SR 1101 over Blanket Creek State Project No. 6.503218 I.D. No. B-2035 CATEGORICAL EXCLUSION U. S. DEPARTMENT OF TRANSPORTATION FEDERAL HIGHWAY ADMINISTRATION AND N. C. DEPARTMENT OF TRANSPORTATION DIVISION OF HIGHWAYS APPROVED: D to L. J. rd, P. E., anager Tanning and Environmental Branch, NCDOT &OZ1,92 Date Nic of L. Graf, P. E. FOB Division Administrator, FHWA Forsyth County, Bridge No. 100 on SR 1101 over Blanket Creek State Project No. 6.503218 I.D. No. B-2035 CATEGORICAL EXCLUSION December, 1991 Documentation Prepared in Planning and Environmental Branch By: 14ich6le James Project Planning Engineer Way, 4 Q- 44- 7//., ' o 7/t 7L Wayne Elliott Bridge Project Planni Engineer Unit Head Franklin Vick, P.E. Assistant Manager of Planning and Environmental ?.•``?ZH CAR04 p. .......... ??l,9'•. •OFESS;O % SEAL s 7754 ti ••FNGI NEB ,.• ••......... ?cJ ., N ,q KLIN y Forsyth County, Bridge No. 100 on SR 1101 over Blanket Creek State Project No. 6.503218 I.D. No. B-2035 Bridge No. 100 has been included in the current Transportation Improvement Program. The location is shown in Figure 1. No substantial environmental impacts are anticipated. The project has been classified as a Federal "categorical exclusion". I. SUMMARY OF RECOMMENDATIONS Bridge No. 100 should be replaced at the existing location with a pre-cast reinforced concrete box culvert as shown by Alternate lA (see Figure 2). Only minimum approach work is required to tie the culvert to the existing approaches. Preliminary hydrographic studies indicate that a double 8' x 7' box culvert should be provided. Traffic will be detoured along existing roads during the 2 month construction period. Estimated cost, based on current prices, is $ 137,000. The estimated cost of the project, as shown in the Transportation Improvement Program, is $ 178,000. II. ENVIRONMENTAL COMMITMENTS All standard procedures and measures will be implemented to avoid or minimize environmental impacts. No special or unique environmental commitments are required for this project. If the State Historic Preservation Officer determines that an intensive archaeology survey is needed for this project, the survey will be completed prior to construction. Approximately .01 acre of wetlands will be disrupted by the project. Best Management Practices will be utilized to minimize these impacts. III. EXISTING CONDITIONS SR 1101 is classified as a rural local route in the Statewide Functional Classification System and is not part of the Federal Aid System. 2 In the vicinity of the bridge, SR 1101 has a 17-foot pavement with 8-foot shoulders (see Figure 2). Vertical alignment is generally flat. The approaches are on a tangent alignment 200 feet either side of the bridge. The structure is situated 9 feet above the creek bed. The approaches are on embankments ranging up to t9 feet above natural ground. Land use in the immediate vicinity of the bridge is primarily woodland and farmland. Development in the surrounding area is rural residential. The current traffic volume of 1100 VPD is expected to increase to approximately 2000 VPD by the year 2011. The projected volume includes 0-1% truck-tractor semi-trailer (TTST) and 2% dual-tired vehicles (DT). The speed limit is 45 MPH. The existing bridge (see Figure 3) was constructed in 1957. The superstructure consists of a timber deck with I-beams and timber stringers. The substructure is composed of timber caps and piles. Overall length is 41 feet. Clear roadway width is 17.2 feet. The posted weight limit is 14 tons for single vehicles and 19 tons for trucks with trailers. Bridge No. 100 has a sufficiency rating of 11.0 compared to a rating of 100 for a new structure. Four accidents were reported on Bridge No. 100 during the period from December, 1987 to November, 1990. Four school buses cross the studied bridge daily. III. ALTERNATIVES Three alternative methods of replacing Bridge No. 100 were studied. The design speed for each alternate is 60 MPH. Alternate 1 would involve replacement of the bridge along the existing roadway alignment with a cast-in-place reinforced concrete box culvert (2 @ 8' x 7'). The road would be closed for approximately 4 months. Traffic would be maintained on existing local roads as shown in Figure 1. This alternate would retain the present roadway alignment. Alternate lA (recommended) will involve replacement of the bridge along the existing roadway alignment with a pre-cast reinforced concrete box culvert (2 @ 8' x 7'). Road closure will be reduced to 2 months. Traffic will be maintained on existing local roads as shown in Figure 1. This alternate will retain the present roadway alignment. Alternate 2 is identical to Alternate 1 except traffic is to be maintained on-site with a temporary detour structure (2 @ 72" pipe) located immediately west of the existing structure. 3 Consideration was given to providing a culvert on new alignment. It was determined that no benefits or savings in costs would result. Therefore, a relocated alignment was not considered to be a competitive alternate. The "do-nothing" alternative would eventually necessitate closure of the bridge. This is not prudent due to the traffic service provided by SR 1101. "Rehabilitation" of the old bridge is not feasible due to its age and deteriorated condition. IV. ESTIMATED COST Estimated cost of the studied alternatives is as follows: (Recommended) Alternate 1 Alternate 1A Alternate 2 Structure $ 50,000 $ 47,000 $ 50,000 Roadway Approaches 31,000 31,000 31,000 Detour Structure & - 500 130 Approaches - , Structure'Removal 6,000 6,000 6,000 Engineering & Contingencies 13,000 13,000 33,000 Right-of-Way, Utilities 40,000 40,000 42,500 Total $ 140,000 $ 137,000 $ 293,000 V. TRAFFIC DETOUR The Division Engineer concurs that traffic can be detoured during construction as shown in Figure 1. Approximately 2.9 miles of additional travel will be necessary for the average vehicle affected by road closure. A road-user analysis, based on a 2-month construction period, indi- cates the cost of additional travel would be approximately $ 58,000. The estimated cost of providing an on-site detour is $156,000 resulting in a benefit-cost ratio of 0.4. This ratio indicates that detouring traffic along secondary roads is justifiable. A concrete products company that produces box culverts is located near the project site. 4 Provision of an on-site detour is not justifiable due to the availa- bility of a suitable detour route. Detour roadways and bridges are adequate to accommodate affected traffic during the construction period. The Forsyth County School Transportation Director has no objections if Bridge No. 100 is closed to traffic for construction. VI. RECOMMENDED IMPROVEMENTS Bridge No. 100 should be replaced at its present location with a pre- cast reinforced concrete box culvert. According to a preliminary hydro- graphic study, a double 8' x 7' precast concrete box culvert will accommodate the flow of Blanket Creek at this point. The structure dimen- sions may be increased or decreased as necessary to accommodate peak flows of Blanket Creek as determined by further hydrologic studies. The recommended improvements will include about 200 feet of improved roadway approaches. A 22-foot pavement with 6-foot graded shoulders should be provided on the approaches. The elevation of the new crossing is expected to be approximately the same as the elevation of the existing bridge. The length of the culvert should be adequate to accommodate a 22-foot pavement with 6-foot graded shoulders, the guardrail and the berm behind the guardrail. VII. ENVIRONMENTAL IMPACTS The project is expected to have an overall positive impact. Replace- ment of an inadequate bridge will result in safer traffic operations. The project is considered to be a Federal "categorical exclusion" due to its limited scope and insignificant environmental consequences. The bridge replacement will not the quality of the human or natural NCDOT standards and specifications. have a significant adverse effect on environment with the use of current The project is not in conflict with any plan, existing land use, or zoning regulation. No significant change in land use is expected to result from construction of the project. No adverse impact on families or communities is anticipated. Right-of-way acquisition will be limited. No significant adverse effect on public facilities or services is expected. The project is not expected to adversely affect social, economic, or religious opportunities in the area. The project has been coordinated with the Soil Conservation Service and is exempt from the Farmland Protection Policy Act. 5 Tires compliance with Section 106 of the National Act of 1966 as amended. Section 106 requires that d, licensed, or permitted project has an effect upon a or eligible for the National Register of Historic ory Council on Historic Preservation be given an nment. if potential effect of this project was delineated and only building within the area of potential effect is less of age and is not eligible for the National Register. No. 100 was built in 1957 and is not eligible for listing in al Register. project does not involve any Section 4(f) properties. There are ,icly-owned parks, historic sites, recreational facilities, or fe and waterfowl refuges of national, state, or local significance e vicinity of the project. The subject project lies to the immediate north of Clemmons and west Winston-Salem, the Forsyth County Seat. An industrialized county, it s located in the Piedmont physiographic province in north-central North .arolina. The relief of the county is characterized as gently sloping, with fairly broad ridges. Anticipated plant community impacts for each alternate are summarized below. Calculations are based on 80 feet of right-of-way. Table 1. PLANT COMMUNITY/WETLAND IMPACTS BY ALTERNATE ALTERNATE AREA OF IMPACTS (acres) Alternate 1 0.01 Recommended Alternate lA 0.01 Alternate 2 0.30 Floodplain forests are home to a resurgent beaver Castor canadensis) Population. Other typical residents are raccoons (Procyon lotor), muskrat Ondatra zibethicus), mink Mustela vison) and Virginia oposum Didel his virq- in D. 6 Birds sighted or heard in the area, include the robin Turdus miqratorus), cardinal (Cardinalis cardinalis), Carolina wren (Thryothorus ludovicianus), Carolina chickadee Parus carolinensis) and American goldfinch (Carduelis psaltria). Wetland communities are valuable habitat for reptiles and amphibians. Amphibians in particular, are highly water dependent for completion of larval stages in their life cycle. Some species are totally aquatic. Spring peeper H la crucifer), bullfrog Rana catesbeiana), pickerel frog palustris) dwarf salamander Eur cea quadridigitata), southern dusky salamander (Desmongnathus auriculatus), yellowbelly slider (chrysemys scri ta), northern water snake Nerodiea sipedon), and rat snake Ela he obsoleta) are but a few of the reptiles and amphibians likely to be found in the project area. Fish species that are common to the study area, are carp C rinus carpio), channel catfish (Ictalurus catus), white suckers (catostomus commersoni), snail bullheads (Ictalurus brunneus), LI. nebulosus). Redbreast sunfish Le omis auritus) and largemouth bass (Micropterus salmoides) and common game fish. Loss of-wildlife habitat, particularly for aquatic species and the elimination of existing habitat are serious impacts that result from dredging, filling, pile-driving operations, slope stabilization and land clearing. These construction activities result in the direct loss of benthic organisms and an increase in silt load in wetland environments. Mobile aquatic organisms are better able to avoid impacts, and will have a faster recovery rate from siltation, than those species that are filter feeders and/or relatively immobile. The removal of benthic organisms reduces the potential food supply for vertebrate and aquatic organisms. Siltation has many adverse impacts on fish and benthos: decreases the depth of light penetration inhibiting plant and algal growth, which is a food source; clogs the filtration apparatus of filter-feeding benthos and the gills of fish; buries benthic organisms on the bottom, cutting them off from a food source; adversely modifies preferred benthic substrate; and spoils downstream spawning beds for fish. This bridge replacement project spans Blanket Creek, a first-order tributary to the Yadkin River, contained within the Yadkin-Pee Dee River basin. Blanket Creek may be characterized as a sandy, low gradient stream. The stream course is channelized and varies in width from six to twenty feet. A large amount.of debris occupies the channel. Blanket Creek has a "best usage" classification of C. Class C designates water suitable for secondary recreation, aquatic life propagation and survival, fishing, wildlife and agriculture. No waters classified as High Quality waters, Outstanding Resource Waters, nor any segments of rivers classified under the federal Wild and Scenic Rivers Act or the state Natural and Scenic Rivers Act, will be impacted by the proposed project. A man-dominated (shrub-scrub) community was identified in the study area. It is characterized as a wetland. Wetland communities were identified in the project corridor on the basis of low soil chroma values, hydrophytic vegetation and the presence of hydrology or hydrological indicators, such as stained, matted vegetation, high water marks on trees, buttressed tree bases and surface roots. Man-dominated lands are areas where man's structures or activities preclude natural plant succession. Maintenance activities associated with a powerline clearing through the floodplain of Blanket Creek have contributed to a shrub-scrub community. Sweet-gum (Liquidambar syraciflua) and sycamore (Plantanus occidentalis) thickets are interspersed with black willow Salix nigra), blackberry Rubus sp.) and swamp rose Rosa palustris). Mature black walnut trees Ju lans nigra) are scattered throughout this community. A rich herbaceous layer is composed of (Polygonum convolvulus), jumpseed Tovara virqiniana), wood-sorrel Oxalis violaceae), jewel-seed (Impatiens capensis), pigweed (Chenopodium album), yerbesina alternifolia), lespedeza (Lespedeza virginica), pokeweed (Phytolaca virginica), Japanese honeysuckle Lonicera Japonica). Prevalent vines are green-brier Smilax lg auca) and moonseed (Menispermum canadense). Embankments and culverts will modify flow patterns in portions of the wetlands close to the road, and hence modify the original character of the habitat. Pools frequently created above or below openings of culverts, trap sediment during periods of high water. Wetland flood control capacity will be reduced proportionately by the amount of fill utilized in wetlands. Wetlands fall under the broad category of "Waters of the United States" as defined in 33 CFR 328.3. The US Army Corps of Engineers (COE) takes jurisdiction over the discharge of dredged or fill material into these wetlands as authorized by Section 404 of the Clean Water Act. Impacts resulting from bridge replacement and the construction of a detour would involve at least partial clearing of wetland areas. Wetland habitat within the construction path would be eliminated where Blanket Creek is crossed on fill and culverts. Construction of the culvert will introduce sediment to Blanket Creek. Minimal habitat loss and the modification of existing habitat would also be associated with culvert placement in the channel. Probable Wetland acreage impacts are summarized in Table I. In accordance with provisions of Section 404 of the Clean Water Act (33 U.S.C. 1344), a permit will be required from the COE for the discharge of dredged or fill material into "Waters of the United States". The subject project is classified as a Categorical Exclusion likely to come under Provisions of Nationwide Permit 33 CFR 330.5 (A) 23. This permit authorized any activities, work and discharges undertaken, 8 assisted, authorized, regulated, funded or financed, in whole or in part, by another federal agency and that the activity is "categorically excluded" from environmental documentation because it is included within a category of actions which neither individually or cumulatively have a significant effect on the environment. However, final permit decisions are left to the discretionary authority of the United States Army Corps of Engineers. A 401 Water Quality Certification administered through the N. C. Department of Environment, Health and Natural Resources will be required. This certificate is issued for any activity which may result in a discharge into waters for which a federal permit is required. Compensatory mitigation is not required under a Nationwide Permit. Erosion and sedimentation control measures will be strictly enforced during construction activities to minimize unnecessary impacts to stream/wetland ecosystems. Plants and animals with federal classifications of Endangered (E), Threatened (T), Proposed Endangered (PE) and Proposed Threatened (PT) are protected under provisions of Section 7 and Section 9 of the Endangered Species Act of 1973, as amended. Information received from the US Fish and Wildlife Service (USFWS) reports the federally Endangered red-cockaded woodpecker Picoides borealis) and the small-anthered bittercress (cardimine micranthera) as occurring in Forsyth County. The red=cockaded woodpecker has specific nesting and foraging habitat requirements. Nesting habitat consists of pine or pine-hardwood (50 percent or more pine) stands over 60 years of age. Available foraging habitat is defined as pine and pine-hardwood stands (50 percent or more pine) over 30 years of age, continguous to and within 0.5 mile of the colony centroid. The 0.5 mile radius from the colony centroid represents the foraging range of clans and may encompass areas outside of the project area. No suitable habitat exists in the project area, thus subject project will not impact the species. The federally Endangered small-anthered bittercress is endemic to seepages, streambanks and moist woods in Forsyth and Stokes Counties. A member of the mustard family, it is an erect, slender herb with a simple or branched stem growing 2 to 4 decimeters tall. Crenate, basal leaves are 1 to 2 cm long. Stem leaves are alternate and unlobed. Flowers are small and have four white petals, six stamens and small, round anthers. Fruits are slender siliques. Flowers and fruits appear in April and May. Suitable habitat exists along the stream bank of Blanket Creek, highlighting the possibility that the plant may be present. Due to seaonsality and the need for reproductive structures for positive identification, a scientific survey will be conducted in April/May, during the flowering and fruiting period of this plant. 9 In addition, the Candidate species nestronia (Nestronia umbellula) and bog turtle Clemm s muhlenbergi) may occur in the area. Candidate species are not legally protected under the Endangered Species Act and are not subject to any of its provisions, including Section 7, until they are formally proposed or listed as Threatened or Endangered. The bog turtle is currently listed as a federal Candidate species. It is listed by the state of North Carolina as Threatened. It occurs in bogs, wet pastures and wet thickets. Suitable habitat exists in the project area although no surveys for the organism were conducted. The presence or absence of this species will be confirmed through a scientific survey during the appropriate season(s). The USFWS provided information on the Candidate (C) species nestronia. Nestronia is listed by the state of North Carolina as Threatened. It occurs in sandy, open woodlands and creek borders. It is usually parasitic on oak and pine roots. The presence or absence of this species can only be confirmed through a scientific survey during the appropriate season(s). Plants or animals with state designations of Endangered (E), Threatened (T) or Special Concern (SC) are granted protection by the State Endangered Species Act and the NC Plant Protection and Conservation Act of 1979, administered and enforced by the North Carolina Wildlife Resources Commission and the NC Department of Agriculture. The North Carolina Natural Heritage Program database reports no state protected species within the immediate project area. The project is located within the Northern Piedmont Air Quality Control Region. The ambient air quality for Forsyth County has been determined to be in compliance with the National Ambient Air Quality Standards. Since this project is located in an area where the State Implementation Plan (SIP) does not contain any transportation control measures, the conformity procedures of 23 CFR 770 do not apply to this project. The project will not substantially increase traffic volumes. Therefore, its impact on noise levels and air quality will be insig- nificant. Noise levels could increase during construction but will be temporary. If vegetation is disposed of by burning, all burning shall be done in accordance with applicable local laws and regulations of the North Carolina SIP for air quality in compliance with 15 NCAC 2D.0520. This evaluation completes the assessment requirements of FHPM 7-7-3 (highway traffic noise) and FHPM 7-7-9 (air quality) and no additional reports are required. Forsyth County is a participant in the National Flood Insurance Regular Program. The approximate 100-year floodplain in the project area is shown in Figure 4. The amount of floodplain area to be affected is not considered to be significant. 10 There are no practical alternatives to crossing the floodplain area. Any shift in alignment would result in a crossing of about the same magnitude. The alignment of the project is perpendicular to the flood- plain area. All reasonable measures will be taken to minimize any possible harm. An individual permit will not be required from the Corps of Engineers since the Nationwide Section 404 permit provisions are applicable, and the provisions of 330.5(b) and 330.6 will be followed. On the basis of the above discussion, it is concluded that no serious adverse environmental effects will result from implementation of the project. MJ/wp e 4 6 _ 114 a 744/ 76471, 11 / o _ ]66. ov 7461 ?? .17 /. 744 / OP 7 7 c JJ .17 7660 1447 OJ 15 o I1 J310 07 0 00 9 0 1194 17 4 ° 25.2. u ]!dl 3382 :581 1611 OP -14 0 09 a 1604 S ° leev „ H. 749Q / , 1 c I 1101 1100 1 9 \ ;I 1116 copemium 76 .04 16!1 114)?a 5/0 Y 1]70 II17 17 t.. ?J 1 ? II i no7 r?1e9I i 7 17 7416 LlS ?, BRIDGE N0. 100 O7 6?' 77 F i 11 .13 ]407 .09 1 b ?. o 11 s 1e7 1e7f r IIIFFF J„Qlj 7 00 10 _ l (7676 15 // 1?.. 7677 7 1 '`O ;t¢jd 07 _76!1 1 0Q a 00 0 / I I -? .Od oAL4 Oa 1679 he o t ?3V3 '' Iio1 40 II7` LEGEND STUDIED DETOUR ROUTE NORTH CAROLINA DEPARTMENT OF TRANSPORTATION ' DIVISION OF HIGHWAYS PLANNING AND ENVIRONMENTAL BRANCH FORSYTH COUNTY BRIDGE NO. 100 ON SR 1101 OVER BLANKET CREEK B-2035 0 feet 100 2/91 1 1 1 FIG.1 s l town 11 H f •. ? it -•w. BRIDGE NO. 100 FORSYTH COUNTY B-2035 LOOKING NORTHWES' LOOKING SOUTHEAST PHOTOS OF EXISTING CONDITIONS lldrmony rove '? r'(• - _% ,' , (' (? ? A' _ r ? I , ? _ ? ?- ;1 1. ( ? I- . ? ? r 6 ? ? ?/. -. ' ??'? L }'r ,i ).r,,' it ? ?? );? II l' .?' __• ,??' ?u ?) ?I •' •? \?r 6 ? i ?\?+ ?'.. ??LYj I ?l', I1 ?? ? I (/ ? i _ I? ' v--?? ?; r ? i' 1 -? /., ? ' ',?-?1 '?`f yJ?ra 7 ._ ', l l '1 •? ? l; ?' ??r . 1."\ .' ? I I?/ '?, li ' !(•? ' I'1 11 /? 1 -r --? I%.C?-'- - T mr?>i t? I I ?? _n_ //% ?,i' I i'? ?? II? 1 mot. ,.c ^??\? %!'?1•' ?I- , ,.,_. Il 76 ?V <e I _ 5 r I ??? ? A? ?. ., (. ? / r .. 1?• '?. ?j? lh ??l ?J iRhScFti.?< ?./' ! 1 . \.? ill ? ? ? .?, off/ 3 ?r,•• 4 , ;v, twat r_?, :'? ! Ter, Went PotayYb???a (?( 41 Ii1R h .1 ? )?, R nfl j. N?" ?, I,L ? 3 ?\\ ?J/r l?r? ?? -1\. ' '.l' 111.. ??. i.•-' " •, _ -rte-- - Il ?_: - (I l I : ,.(?? :1, (\r?~j '?? 100 YEAR FLOOD PLAIN BRIDGE NO. 100 r.tl?'-?n;'?.-• I/ l?( (1_ 7 1? 11? ( 1•:1? \i..,.;?.-.X?tv-. ,\°.-, _ , / f ?) 'r ?•.' ? '11t J- 11 ,.'I • I,.? /. ° rI^_ •?•? /J /.??1. 1 r 1l / `? _ ) C ternfum Gr ?r i l ? 1 ? ?•i1auLL'a,1 ? ,- !) „I /?I" ,1. '??i??ze ? ?,I i?\ ? 1 . ( t\ , _1 c 1 - ! 17ec /,/ s' _ • b / 11. ( ??pp _ ?? j.. /?' .??) t,?v I ?. /?'-a (?. 11 act ? I 1 1 •/?1??7 ? ?r' ?) ? l 111 '`? ??y ??" ??? %"• ?- ??„?, ? ?? ? ??` _',1 ? ?--?? ?i . ? r, /.;?I /- .1 „?? (?. j 1 1'%j1 `1?V?? . ll?r f?4 11.,x' (r ?'.h;•?-"?/ -.; ,(, '\` - - .)? _ ? ( 1?r.i7••? %?(J,1 f?,? ?'.?1 yz ti IL -?_ // ! / 1 ' ' '91 `?) ???`?1' / (? ?? null( ?J ?• 'l P?_ /, , ll?r 1}C'.. U-L (1)1100 YEAR FLOOD PLAIN lrl ( / l I(' 1 IL nio? lii 1' Flo 1 V-1i)r A,( (?'.o`??Il'?J' /G?\ , ?'I?•'?,r 1, , - , ??4? ,,> _ •? FIGURE 4 .