PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County

Location: North Carolina
Posted: Aug 12, 2026
Due: Sep 16, 2026
Agency: Division of Highways
Type of Government: State & Local
Category:
  • Y - Construction of Structures and Facilities
Publication URL: To access bid details, please log in.
  • PRB.38765; WBS 51830.2.11.14 & 51830.2.11.15; HELENE RELIEF
    POC
    PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County

    • Attachment Preview

    THERESA C. & JOSEPH
    RAMSEY
    JAMES PARSONS
    BRIDGE LOCATION
    JESSICA WOODEL
    JAMES & NANCY LINDSEY
    SITE ID: 003-01-6d96a
    SITE ADDRESS: 142 DOE RIDGE LANE,
    SPARTA, NC
    North Carolina Emergency Management - Private Roads and Bridges
    Site Information Form
    Site Number: ..o...o...3..-..o....1...-...s...d..9....,6a.._____________________________
    Site Address: 142 Doe Ridge Lane Sparta NC
    GPS Coordinates: ...,3..6...,5"'4.,.3..,B_-.a._.._1..1....,.a..s.s..._________________________
    Bridge Type: Steel I-beam wjth Timber Decking or Modular Steel Bridge
    Span Length: 40 ft Standard Bridge or so ft Modular Bridge Refer to BSB for reQuired waterway opening
    Bridge Width: 12'-0" Clear Width
    Substructure Type: Concrete Cap on Driven Piles
    Geotechnical Information: See Standard Bridge Plans or the Modular Bridge Substructure Plans for Notes
    Additional Notes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
    Timber bridge railing not reQuired for Steel I-beam wjth timber decking option
    Modular Steel Bridge optjon shall include guardrail as part of the system
    Wingwaus are not ceQuired
    The existing bridge is in place and must be removed by the Contractor prior to the start of constructjon
    No known debris or obstructions in the stream reQuiring removal
    BRIDGE SURVEY & HYDRAULIC DESIGN REPORT
    NC DEPARTMENT OF EMERGENCY MANAGEMENT
    PRIVATE ROADS AND BRIDGES PROGRAM
    Site Number 003-01-6d96a
    Latitude 36.54348
    Longitude
    County Alleghany
    Address near 142 Doe Ridge Lane
    City Sparta, NC
    Zip Code
    Recommended Structure 1 @ 50' Steel Modular Bridge (40' effective length)
    -81.18679
    28675
    Recommended Width of Roadway
    Recommended Location is @ upstream, Downstream) of Existing Crossing .
    Skew
    Temporary Crossing ............................................................. ..................... ..... ................................................ ..... .
    I hereby certify that that I have reviewed the existing hydraulic conveyance at this site which was a 21 ft existing bridge with the proposed conveyance provided by the proposed 50.0 ft. span bridge.
    The proposed bridge low chord for the bridge shall be set in accordance with the the FEMA Disaster Specific Guidance for the Replacement of Private Roads and Bridges issued on 14 February 2025, “to provide
    bridge/culvert design plans certified (sealed, signed, and dated) by a Professional Engineer licensed in the State of North Carolina demonstrating that the newly designed and installed private bridge/culvert provides
    conveyance greater than or equal to the original destroyed crossing”.
    This certification demonstrates that the newly designed and installed private bridge/culvert provides conveyance greater than or equal to the original destroyed crossing. This is based on the best available data provided
    from post storm evaluations. Portions of the existing structures may have been destroyed, removed, modified or shifted from their original location or elevation.
    Designed by
    Assisted by
    J I i i Johnson, Minniran, & Thompson Inc.
    108 Asheville Commerce Parkway
    Candler, NC, 28715
    License No: C-3097
    6/30/2026 | 2:11:03 PM EDT
    Date
    SITE DATA
    Drainage Area
    Source
    River Basin New River
    Character
    Stream Classification (e.g., Trout, High Quality Water) C+
    Debris Potential: Low D Moderate IXI High 0
    Existing Structure - Source of Available Data NCEM Private Roads and Bridges Inspection Team
    Existing Structure - Description 1 @ 21' private bridge (damaged by Helene)
    Estimated Waterway Opening
    84.1
    ff
    Design Control Elev ........................ ft Source
    Gage Station No
    Period of Records
    Max Discharge
    cfs Date
    Frequency
    Historical Flood Information:
    Date
    Elev .................. ft Est Freq ............. yr Source
    Period of
    .......................................... Knowledge ............. yrs
    Historical Scour Info: General
    ft Contraction
    ft Local
    ft
    Channel Slope .................... ft/ft Source
    Normal Water Surface Elev
    ft
    Manning's n: Left OB
    Channel
    .............
    Right OB ........... . Source
    Flood Study I Status
    N/A (Rock Creek is a tributary to the New River, DS)
    Flood Study
    With
    100-yr Discharge .................. cfs WS Elev: Floodway
    Without
    ft Floodway
    ft River Station
    DESIGN DATA
    Hydrological Method
    Hydraulic Design Method Disaster Specific Guidance for the Replacement of Private Roads and Bridges 2/14/2025
    Floods Evaluated
    Frequency
    (year)
    Discharge
    (cfs)
    Elevation
    (ft)
    Backwater
    (ft)
    Bridge Opening Velocity
    (fps)
    Waterway Opening Provided Below: Design WS Elev
    sf 100-yr WS Elev ..................... sf Total ._1_8_1._ 7 _. sf
    Average Channel Velocity (Design)
    fps Average Overbank Velocity (Design)
    fps
    Computed Scour: General
    ................ ft Contraction ........................................ ft Local
    ft
    INFORMATION TO BE SHOWN ON PLANS
    HYDRAULIC DATA
    DESIGN DISCHARGE
    FREQUENCY OF DESIGN FLOOD
    DESIGN HIGH WATER ELEVATION
    DRAINAGE AREA
    BASIC DISCHARGE (Q100)
    BASIC HIGH WATER ELEVATION
    =8- 45- C.F.S.
    =- 25 - YRS.
    =- -
    =- 4.1- 3 SQ.Ml.
    =1- 29- 0 C.F.S.
    =- -
    OVERTOPPING FLOOD DATA
    OVERTOPPING DISCHARGE
    FREQUENCY OF OVERRTOPPING FLOOD
    OVERTOPPING FLOOD ELEVATION
    • N O T ELOCATION O F O1£R1VPPING
    =- - C.F.S.
    . =- - YRS.
    =- -
    WS EL. Taken @ River Station ?
    ADDITIONAL INFORMATION AND COMPUTATIONS
    Emergency Vehicle Access
    Poss i b l e?
    Number o f Homes Con firmed
    Number o f Homes
    Church es Confi rmed
    Number o f Chu rches
    Sdi.ools. Co 11firmed
    Number o:f Schools
    Rec reational/ 13 usiness Are as
    Co nfirmed
    Number o f Recreationa l/Busin ess
    A reas
    Gene ral Descnpoon
    Overall Cond it ion
    Co nd rtion Other
    Site Re p a r Status
    Co nd ition Descrr ption
    Expected Leve l o f Effo rt
    Other Leve l of Effort
    Hon zontal Curve
    Number o f Travel Lanes (LOS)
    ln cl m at1o n
    Roadway D ivider
    Road/ Bndge Width (It)
    Spa rt/Gap Est1ma1e (ft)
    Surface to Water (h )
    Uti lity/ Mechamcal
    No
    Yes
    2
    Yes
    0
    Yes
    0
    Yes
    0
    Bridg e re p lacement. 37' bn dg e
    span
    Damage
    Tempora ry Repa ir
    Fu ll b l'll d ge rep lacement needed
    along with rip r.ap fo r slop e
    stability. Cu rrent b ri dge missing
    outside g irde rs. Inside g irders
    damaged . S.evere scour o b served _
    Bridg e deck d amage d . Bri dge u:se
    not advised . Homeowners elde rly.
    Fu II Redesign
    No
    12" W12X25 beam
    + 0.25" Steel Plate
    No
    + 0.25" Steel Plate
    =12.5" (1'-1/2") ft structure depth)
    No
    12.00
    Proposed Conveyance Area has been reduced by
    37.00
    0.9 sf to account for blockage created by 3 Plank
    6_0 0
    Connectors as shown in Detail A of the Typical
    Section.
    No
    10+00 10+05 10+10 10+15 10+20 10+25 10+30 10+35 10+40 10+45 10+50 10+55 10+60 10+65 10+70
    25.00
    TO: Rock Creek Lane.
    CL STREAM
    25.00
    20.00
    15.00
    - +--i-- - - - - -
    Existing Ground
    , !/ (estimated)
    50' Proposed Modular Bridge
    21' Existing Bridge
    (damaged)
    .II (40' Effective Opening)
    ,
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    !
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    20.00
    15.00
    r~--- i 4 · 1
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    (TYP.)
    ++-t----t+H -l-+--
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    -
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    ---l---l--l--D---l-+---l-+-U----1---1-
    c--t7---
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    -
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    - - t - t - - - t -- - t- -
    --+-r---+--++
    t - - - + - H - t ----t-+
    --+-tt-+-+ +
    --+--+-t-+ H+-+H++-l-++-l--f-++l -+--+---+-+-+-
    --+--+-1-+ H+-++-+++-1++-t--1-1-+1---+--+---+-+-+-
    10.00
    Driven Piles
    See Structural Plans
    -+1--++++---w.''--.+.-__.'jj__ff--+l-__1I--_-iH-i
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    i-=i~-=-j-::.-::.ij-::.-::.ij~ti-::.-::.t-::.-::.-::.t-::.-::.ti -::.-::.ti-=i:-::.-::.-=i:ii-::.t-::.-=i:ti-=i:-::.-::.-::i:t
    10.00 +-+--l---+-l------1----1---f----l--1--1-++-+-l-l-__j---l-_j__j~ _j_f----l-_j__ _j__j._
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    Ex. Waterway
    opening 84.1 SF
    Prop. Waterway
    opening 181.7 SF
    . I I
    '
    '\
    ' 5.00
    '
    5.00
    Class II Rip Rap, 4' Thick
    DOWN
    STREAM
    Class II Rip Rap, 4' Thick
    1.5:1 Slope with Type 1
    1.5:1 Slope with Type 1
    View
    Geotextile Liner (TYP.)
    Geotextile Liner (TYP.)
    0.00
    0.00
    RAIi iWA D !I f 1H OTH;' R
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    IIII I I
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    Stationing and elevations shown are relative to the site.
    Based on an assumed datum.
    No survey grade field work was performed.
    BSR based on MODULAR BRIDGE PLANS
    III
    IIII IIII
    II I
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    I I I I 111 11 111
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    I I-
    BRIDGE SURVEY & HYDRAULIC DESIGN REPORT
    NC DEPARTMENT OF EMERGENCY MANAGEMENT
    PRIVATE ROADS AND BRIDGES PROGRAM
    Site Number 003-01-6d96a
    Latitude 36.54348
    County Alleghany
    Address near 142 Doe Ridge Lane
    City Sparta, NC
    Recommended Structure 1 @ 40' Steel Girder Bridge
    Longitude -81.18679
    Zip Code 28675
    Recommended Width of Roadway
    Recommended Location is @ upstream, Downstream) of Existing Crossing .
    Skew
    Temporary Crossing ............................................................. ..................... ..... ................................................ ..... .
    I hereby certify that that I have reviewed the existing hydraulic conveyance at this site which was a 21 ft existing bridge with the proposed conveyance provided by the proposed 40.0 ft. span bridge.
    The proposed bridge low chord for the bridge shall be set in accordance with the the FEMA Disaster Specific Guidance for the Replacement of Private Roads and Bridges issued on 14 February 2025, “to provide
    bridge/culvert design plans certified (sealed, signed, and dated) by a Professional Engineer licensed in the State of North Carolina demonstrating that the newly designed and installed private bridge/culvert provides
    conveyance greater than or equal to the original destroyed crossing”.
    This certification demonstrates that the newly designed and installed private bridge/culvert provides conveyance greater than or equal to the original destroyed crossing. This is based on the best available data provided
    from post storm evaluations. Portions of the existing structures may have been destroyed, removed, modified or shifted from their original location or elevation.
    Designed by
    Assisted by
    J I i i Johnson, M inniran, & Thompson Inc.
    108 Asheville Commerce Parkway
    Candler, NC, 28715
    License No: C-3097
    6/30/2026 | 2:11:03 PM EDT
    Date
    SITE DATA
    Drainage Area
    Source
    River Basin New River
    Character
    Stream Classification (e.g., Trout, High Quality Water) C+
    IXI D Debris Potential: Low
    Moderate
    High 0
    Existing Structure - Source of Available Data NCEM Private Roads and Bridges Inspection Team
    Existing Structure - Description 1 @ 21' private bridge (damaged by Helene)
    Estimated Waterway Opening 84.1
    ff
    Design Control Elev ........................ ft Source
    Gage Station No
    Period of Records
    Max Discharge
    cfs Date
    Frequency
    Historical Flood Information:
    Date
    Elev .................. ft Est Freq ............. yr Source
    Period of
    .......................................... Knowledge ............. yrs
    Historical Scour Info: General
    ft Contraction
    ft Local
    ft
    Channel Slope .................... ft/ft Source
    Normal Water Surface Elev
    ft
    Manning's n: Left OB
    Channel
    .............
    Right OB ........... . Source
    Flood Study I Status
    N/A (Rock Creek is a tributary to the New River, DS)
    Flood Study
    With
    100-yr Discharge .................. cfs WS Elev: Floodway
    Without
    ft Floodway
    ft River Station
    DESIGN DATA
    Hydrological Method
    Hydraulic Design Method Disaster Specific Guidance for the Replacement of Private Roads and Bridges 2/14/2025
    Floods Evaluated
    Frequency
    (year)
    Discharge
    (cfs)
    Elevation
    (ft)
    Backwater
    (ft)
    Bridge Opening Velocity
    (fps)
    Waterway Opening Provided Below: Design WS Elev
    sf 100-yr WS Elev ..................... sf Total ._1_1_7._ 6 _. sf
    Average Channel Velocity (Design)
    fps Average Overbank Velocity (Design)
    fps
    Computed Scour: General
    ................ ft Contraction ........................................ ft Local
    ft
    INFORMATION TO BE SHOWN ON PLANS
    HYDRAULIC DATA
    DESIGN DISCHARGE
    FREQUENCY OF DESIGN FLOOD
    DESIGN HIGH WATER ELEVATION
    DRAINAGE AREA
    BASIC DISCHARGE (Q100)
    BASIC HIGH WATER ELEVATION
    = 8- 45- C.F.S.
    = - 25 - YRS.
    = --
    = - 4.1- 3 SQ.Ml.
    = 1- 29- 0 C.F.S.
    = --
    OVERTOPPING FLOOD DATA
    OVERTOPPING DISCHARGE
    FREQUENCY OF OVERRTOPPING FLOOD
    OVERTOPPING FLOOD ELEVATION
    • N O T ELOCATION O F O1£R1VPPING
    = - - C.F.S.
    . = - - YRS.
    = --
    WS EL. Taken @ River Station ?
    ADDITIONAL INFORMATION AND COMPUTATIONS
    Emergency Vehicle Access
    Possible?
    Number o f Homes Con firmed
    Number o f Homes
    Churches Confirmed
    Number o f Chu rches
    Sdi.ool s. Co 11firmed
    Number o :f Schools
    Rec reational/ 13 usiness Are as
    Co nfirmed
    Number oi Recreation.a l/Busin ess
    A reas
    Gene ral Descnpoon
    Overall Cond it ion
    Co nd rtion Other
    Site Re p a r Status
    Co nd ition Descrr pti on
    Expected Leve l of Effort
    Other Leve l of Effort
    Honzonta l Curve
    Number o f Travel Lanes (LOS)
    ln cl mat1o n
    Roadway D iv ider
    Road/ Bndge Width (It)
    Spa rt/Gap Est1ma1e (ft)
    Surface to Water (h )
    Uti lity/ Mechamcal
    No
    Yes
    2
    Yes
    0
    Yes
    0
    Yes
    0
    Bridg e re p lacement. 37' bn dg e
    span
    Damage
    Tempora ry Repa ir
    Fu ll b l'll d ge rep lacement needed
    alo ng with rip r.ap fo r slope
    stability. Cu rrent bri dge missing
    outside g irders. Inside girders
    damaged . S.ever e scour o b serve d _
    Bridg e deck d amage d. Bri dge u:se
    not advised . Homeowners elde rly.
    F"u II Redesign
    No
    No
    No
    12.00
    37.00
    6_00
    No
    24" W24X76 beam
    + 8" Deck
    + 2" Runner
    =34" (2'-10") ft structure depth)
    10+00 10+05 10+10 10+15 10+20 10+25 10+30 10+35 10+40 10+45 10+50 10+55 10+60 10+65 10+70
    25.00
    20.00
    15.00
    10.00
    5.00
    0.00
    CL STREAM
    TO: Rock Creek Lane.
    -i-,-.,..
    Existing Ground
    -"(estimated)
    ---
    -
    Driven Piles
    See Structural Plans
    -
    --
    'I
    I
    '
    ' 1----II
    I
    I
    I
    I
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    I
    40' Proposed Bridge
    21' Existing Bridge
    (damaged)
    1'
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    I,
    F
    Ex. Waterway
    opening 84.1 SF
    (37' Effective Opening)
    Steel beam w/ timber deck
    I
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    1J,,.,5 :1
    .... ., i
    I
    I ' .,,
    I
    I
    I
    I
    I
    '
    '
    I
    I,
    I,
    '.
    Prop. Waterway I
    opening 117.6 SF ~
    ,-I I
    I
    II
    II
    II
    ''
    I
    Class II Rip Rap, 4' Thick
    1.5:1 Slope with Type 1
    Geotextile Liner (TYP.)
    DOWN
    STREAM
    View
    Class II Rip Rap, 4' Thick
    1.5:1 Slope with Type 1
    - _J
    Geotextile Liner (TYP.)
    -
    Driven Piles
    _,...See Structural Plans
    -· - - 1-L
    - '------a •
    -
    25.00
    20.00
    15.00
    10.00
    5.00
    0.00
    ~
    ~
    ~
    6Nx 6 " WHEEL
    GUARD (TYP_ )
    ~
    1----- 6" x 6 " WHEEL
    GUARD BLOCK
    llYP.)
    ~
    ~
    ~
    ~
    NAIL EDGE
    DISTAN CE
    (lYP. )
    ~
    ~
    ~
    ~
    ~
    ~
    12 ' O" DECK W IDTH
    r,r
    . jj
    ,. '-!!"
    II
    .·!!'
    6"
    l '-0"
    ITYP.)
    l l'•r CLEAR ROADWAY
    5' ·61\"
    5' ·61\"
    '
    (i BRIDGE ~
    ;
    STAINLESS STEEL DECK CLIPS
    @ l 2NCTS., ALTERNATE SIDES
    OF BEAM , SEE DETA IL 'A'.
    ;
    ;
    0.131" 0 X. 3 " HOT-DIP GALVANIZED
    NAILS @ 6 11 CTS, STAGGE R E □i7" 1
    CLEAR FROM TO P ANO BOTTOM.
    2°' X 10"
    PRESSURE TR EATED,
    / TIMBER RUNNERS r ~P#l, 2" X 8" DECKING.
    q
    t'
    • . n'
    '\
    DIAPHRAG ~
    CHAN NEL (TYP.)
    .
    rz_BEAM (lYP.)
    h .. . I
    • ,l . ·: .J1· n·.·
    i
    !
    I
    ;i
    ;
    ·:( fl~\ ~:·: ·:
    '/ SE; f
    "DECK CLIP
    DETAIL"
    .,,
    • .• ·
    , II
    /\ . r.1 !
    SELF-ADHES IVE ROLL
    ROOF ING APP LI ED TO
    COVER ENTIRE TOP OF
    STEEL BEAM FL.ANGE
    WITH MIN 1/2" OVER HAN G
    EACH SIDE . (TYP. EACH
    BEAM)
    i
    'lBEAM 1
    :(j_BEAM 3
    G:BEAM 5 r-(j_ BEAM 6
    r-
    2 '-0 "
    r - ' i . : :.~2
    I ~
    1 O"
    l '-0 " r - 'i.:::~ 4
    r-
    2' -0 "
    7;
    TYPICAL SECTION
    Stationing and elevations shown are relative to the site.
    Based on an assumed datum.
    No survey grade field work was performed.
    BSR based on STANDARD BRIDGE PLANS -
    '
    .
    -
    FOR INFORMATION ONLY
    GEOTECHNICAL BORING REPORT
    SHEET 4
    WBS 003-01-6d96a
    TIP N/A
    BORE LOG
    ICOUNTY ALLEGHANY
    GEOLOGIST C. Brake
    SITE DESCRIPTION 142 Doe Ridge Lane for Bridge over Rock Creek
    GROUND WTR (ft)
    BORING NO. EB1
    STATION N/A
    OFFSET N/A
    ALIGNMENT -L-
    0 HR.
    6.5
    COLLAR ELEV. 0.0 ft
    TOTAL DEPTH 29.4 ft
    NORTHING 1,023,798
    EASTING 1,357,542
    24 HR.
    6.2
    DRILL RIG/HAMMER EFF./DATE F&R4637 CME-75 78% 03/28/2025
    DRILL METHOD H.S. Augers
    IHAMMER TYPE Automatic
    DRILLER W. Shenberger
    START DATE 06/01/26
    COMP. DATE 06/01/26
    SURFACE WATER DEPTH N/A
    ELEV
    (ft)
    DRIVE
    ELEV
    (ft)
    DEPTH
    (ft)
    BLOW COUNT
    0.5ft 0.5ft 0.5ft
    0
    BLOWS PER FOOT
    25
    50
    75
    I
    I
    I
    SAMP.
    L
    O
    100 NO. MOI G
    ELEV. (ft)
    SOIL AND ROCK DESCRIPTION
    DEPTH (ft)
    0
    0.0
    0.0
    2
    2
    3
    -3.5 3.5
    -5
    1---
    -
    311
    -8.5 8.5
    -10
    878
    -13.5 13.5
    -15
    1---
    -
    324
    -16.4 16.4
    100/0.5
    -18.5 18.5
    -20
    100/0.2
    5
    2
    15
    . I.
    I
    •. j.·
    6
    .
    .
    : -·- ,. •.. . ·-. -L...•--·- -·-·-··-
    100/0.5
    100/0.2•►
    0.0
    GROUND SURFACE
    0.0
    M
    ARTIFICIAL FILL
    -2.0 Brown, Fine to Coarse Sandy SILT (A-4) with 2.0
    Gravel and Mica
    W
    ALLUVIAL
    Gray, Fine Sandy SILT (A-4) with Trace Mica
    -7.0
    7.0
    RESIDUAL
    M
    Brown-Gray, Fine to Coarse Sandy SILT
    (A-4) with Trace Mica and Trace Rock
    Fragments
    W
    -16.1
    16.1
    WEATHERED ROCK
    Gray-Brown MICA SCHIST
    -23.5 23.5
    -25
    1---
    -
    37 63/0.2
    -28.5 28.5
    35 65/0.4
    -
    100/0.7
    100/0•.9•►
    -
    -29.4
    29.4
    Boring Terminated at Elevation -29.4 ft in
    WEATHERED ROCK (MICA SHIST)
    Notes:
    -
    1. Surficial Organic Soil: 0.0'-0.2'
    2. Driller Noted Harder Drilling at 16.1'.
    -
    -
    -
    -
    -
    -
    -
    -
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