PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County
| Agency: | Division of Highways |
|---|---|
| State: | North Carolina |
| Type of Government: | State & Local |
| NAICS Category: |
|
| Posted Date: | Aug 12, 2026 |
| Due Date: | Sep 16, 2026 |
| Original Source: | Please Login to View Page |
| Contact information: | Please Login to View Page |
| Bid Documents: | Please Login to View Page |
Description
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
-
PRB.38765 Bridge Report and Borings.pdfDoc. Type:
Contract Information
Description: PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County POC -
PRB.38765 Invitation to Bid.pdfDoc. Type:
Invitation to Bid
Description: PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County POC -
PRB.38765 Plans.pdfDoc. Type:
Plans
Description: PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County POC -
PRB.38765 Proposal.pdfDoc. Type:
Proposals
Description: PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County POC -
PRB.38765 Required Bid Documents.pdfDoc. Type:
Proposals
Description: PRB.38765 Construction of Standard and Modular Bridges Over Rock Creek in Alleghany County and Over Cove Creek in Watauga County POC
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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1./ '
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20.00
15.00
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+---t-
+
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-
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-
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+
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Concrete Pier Cap
(TYP.)
++-t----t+H -l-+--
,
+
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-
++
-+
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-
+
+7~I
+7 I H
1.~5,:1 r--:.. :;::-. ...
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--1-1--l--l----l----+---l----+--l-+
-
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+
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-
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r
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--+-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
II
'\
I
~
~
-,- ----.'
''
7
II
\
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+
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l-"=t'=-='i.--=i'=--=-~l-=--::IIit+j
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-=--=--=-Di+-=r-it-v=-e-=n--=-tPi-=iil~ei-=s--=i~i+-=-t-=--=--=-ti
-=i~-=--=--=i~-=-j-::.-::.-::.-=i~t
... '-1I1-~++-+-++--+-+-+-+-+--+--+--+-H--t-++-l---+-+-+-+-'"I/~a'l\!:_~,h-+I+---+,-,,Iy+., --+--+-//--+-+-+-'--+-!+-+--!-- It-+•~ ++---+- I-- HS+ee-S+tr+u-+c+tu--ra-ll +P-laHn-s-f-+--l----+--+---++
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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~ t-+--+++--++++-++++---++--1-----+t-+--tl/-.l'+/ --+-++-+-l++----+---7-I-J-h' +--1---l-------l-++-----1-+-l----l------l--l--+--1---------1----1-------l---1--1----l---l---l----+----l-j_______j.__(_-l---l----l-____J_j____j_____j____j____j__-LllJ____lJJ_l__LL
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
AO DTMf NT S[ O' O ON
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III
II
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IIIIIIIII
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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
I
I
I I I I 111 11 111
I II III
IIII IIII
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
I'
I
40' Proposed Bridge
21' Existing Bridge
(damaged)
1'
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----
1.51:'1-.
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1- 1....l... • 1.1.
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2'-10"
I,
F
Ex. Waterway
opening 84.1 SF
(37' Effective Opening)
Steel beam w/ timber deck
I
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2'-6"+/-
-- +
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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
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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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