GREENWOOD Culvert Details.pdf

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Shoe Lake & Greenwood Lake Road ERFO Repairs
Solicitation number
12445525B0008
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The document is a detailed engineering cross-section profile for multiple culvert replacement locations along a road, specifically for the Greenwood Lake Road Emergency Relief for Federally Owned (ERFO) road repair project. The profiles cover seven different culvert sites (MP 4.114, MP 5.72, MP 7.942, MP 10.171, MP 10.44, MP 16.407, and MP 16.562) with consistent replacement specifications including: removing existing Corrugated Metal Pipe (CMP) culverts, installing new poly-coated steel CMP or CMP arch culverts of varying sizes (42" to 72" diameter), setting pipe inverts approximately 0.5 ft below stream bottom, and maintaining specific pipe slopes ranging from 0.5% to 6.5%.

Each culvert location's cross-section profile provides precise elevation data, benchmark locations, existing and proposed road and culvert geometries, and detailed construction notes. Standard installation procedures include: maximum trench slopes of 1:1, dewatering crossings per Contracting Officer's Representative (COR) approved plan, using uncompacted 4-6" bedding of 1/2" minus free-draining material, wrapping bedding sections in geotextile fabric, backfilling with 3" minus material using compaction method 2, and tapering fill slopes to a maximum of 2:1. Additional site-specific requirements include rip rap outlet protection at some locations and instructions for stream habitat preservation.

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Other files

File Type Posted
12445525B0008 Abstract of Offers Greenwood.xlsx XLSX spreadsheet
12445525B0008_Q_A.pdf PDF
SOI_revised.pdf PDF
GREENWOOD FSSS_revised.pdf PDF
COOK_MN_DBA.pdf PDF
GREENWOOD GRAVEL.pdf PDF
Sol_12445525B0008.pdf PDF
GREENWOOD SOI.pdf PDF
GREENWOOD MASTER WORKLIST.pdf PDF
GREENWOOD FSSS.pdf PDF
Greenwood Area ERFO Repairs Drawings.pdf PDF
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BM1 top of rock 100' South of crossing - Rd L, 300

BM2 top of rock 65' North of crossing - Rd R, 296.77

Inlet Invert L, 290.3

Inlet Crown L, 293.05

Outlet crown R, 292.3

Outlet Invert R, 289.55

Inlet Toe L, 290.78

Inlet rd edge L, 295.78 CL, 296

Outlet rd edge R, 295.78

Outlet toe R, 290.64

Inlet Thalweg L, 290.59

Outlet thalweg R, 289.72

-30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30

R e la ti ve E le va ti o n ft

Horizontal Station (ft)

MP 4.114 Greenwood River Cross Section Profile

Existing Road Prism

Existing Culvert Geometry

Benchmarks

Proposed New Culvert

Proposed Road Prism

Stream Channel Bottom

Install poly-coated steel CMP arch

Remove existing CMP

Construction Notes:

- Remove existing 30" x 37' CMP.

Maximum trench slope of 1:1.

- Dewater crossing as specified in COR approved dewatering plan

- Bedding material shall be an uncompacted 4" thick layer of 1/2" minus free draining material.

- Wrap entire bedding section in geotextile with full 24" overlap on top surface.

- Install 49" span 33" rise 42 ft long poly-coated CMP arch

- Set inlet and outlet inverts approximately 0.5 ft below stream bottom

- Set pipe slope at 1.8%

- Backfill trench with 3" minus material.

Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

Wrap entire bedding section in geotextile fabric

Spike in 16" DBH Aspen 50 ft W of pipe 10' off L rd edge , 103.33

Toe of R slope, 92.05

R edge traveled way, 99.78 Rd CL, 100

L edge traveled way, 99.72

Toe of L slope, 82.33

Inlet Invert, 90.58

Inlet Crown, 93.33

Outlet Crown, 90.53

Outlet Invert, 87.78

-40 -30 -20 -10 0 10 20 30 40 50 60 70

R e la ti ve E le va ti o n ft

Horizontal Station (ft)

MP 5.72 Cross Section Profile

Existing Road Prism

Existing 24" CMP

Benchmark

Proposed Road Prism

Proposed New Culvert

Stream Channel Bottom

Construction Notes:

- Remove existing 24" CMP. Maximum excavation slope of 1:1

- Dewater crossing as specified in COR approved dewatering plan

- Bedding material shall be an uncompacted 4" thick layer of 1/2" minus free draining material.

- Install 49" span 33" rise 70 ft long poly-coated CMP.

- Set inlet and outlet inverts approximately 0.5 ft below stream bottom

- Set pipe slope at 4%

- Backfill culvert with 3" minus material. Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

- Place 5 cy. class I rip rap outlet protection.

- Drop any felled trees in outlet channel as specified by COR to create stream habitat structure

Bedding section

Rip rap outlet protection

Remove existing CMP

Install poly-coated CMP arch

Inlet Invert, 91.12

Inlet Crown, 94.12

Outlet Cown, 92.25

Outlet Invert, 89.25

Top of spike in 1' DBH birch 50 ft SW of culvert outlet at toe of L slope. , 93.6

-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45

R e la ti ve E le va ti o n ft

Horizontal Distance (ft)

MP 7.942 Existing Culvert Cross Section

Existing Road Prism

Existing 36" CMP

Benchmark

Remove existing 36"

CMP

90.55

95.76

95.78

87.34

Inlet Invert, 90

Inlet Crown, 92.75

Outlet Cown, 90.05

Outlet Invert, 87.3

Top of spike in 1' DBH birch 50 ft SW of culvert outlet at toe of L slope. , 93.6

90.55

87.34

-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35

R e la ti ve E le va ti o n ft

Horizontal Distance (ft)

MP 7.942 Proposed Culvert Cross Section

Proposed Road Prism

Proposed New Culvert

Benchmark

Channel Bottom

Maximum Allowable Fill Slope Gradient (2:1)

Install poly-coated steel CMP arch

Construction Notes:

- Excavate new trench, maximum slope 1:1.

- Bedding material shall be an uncompacted 4" thick layer of 1/2" minus free draining material.

- Wrap entire bedding section in geotextile with full 24" overlap on top surface.

- Install 49" span 33" rise 52 ft long poly-coated steel

CMP

- Set inlet and outlet inverts below existing ground.

- Set pipe slope at 5.2%

- Backfill culvert with 3" minus. Compaction method 2.

- Remove existing 36" CMP.

- Backfill trench with 3" minus material. Compaction method 2 (209.10b).

- Taper all road fill slopes to maximum of 2:1

Wrap entire bedding section in geotextile fabric

Inlet Invert R, 287.65

Inlet Crown R, 291.15

Outlet crown L, 290.77

Outlet Invert L, 287.27

Rock Benchmark in outlet (L) backslope 50' S of culvert, 300

-50 -40 -30 -20 -10 0 10 20 30 40 50 60

R e la ti ve E le va ti o n ft

Horizontal Station (ft)

MP 10.171 Culvert Cross Section

Existing Culvert Geometry

Existing Road Geometry

Downstream Wetland

Channel Bottom

Proposed Road Prism

Proposed Culvert

Benchmark

Remove existing CMP

Install poly-coated steel CMP

Construction Notes:

- Remove existing 24" CMP. Maximum trench slope of 1:1.

- Dewater crossing as specified in COR approved dewatering plan.

- Bedding material shall be an uncompacted 4" thick layer of 1/2" minus free draining material.

- Wrap entire bedding section in geotextile with full 24" overlap on top surface.

- Install 42" diameter 70 ft long poly-coated CMP

- Set inlet and outlet inverts approximately 0.4 ft below stream bottom

- Set pipe slope at 0.5%

- Backfill trench with 3" minus material. Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

Downstream wetland

Wrap entire bedding section in geotextile fabric

Inlet Invert L, 293.1

Inlet Crown L, 296.2

Outlet Crown R, 292.7

Outlet Invert R, 289.5

Spike in 8" DBH Aspen 100ft E of crossing 10 ft from inlet (L) rd edge, 300

-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50

R e la ti ve E le va ti o n ft

Horizontal Station (ft)

MP 10.44 Cross Section Profile

Existing Road Prism

Existing 36" CMP

Stream Channel Bottom

Proposed New Culvert

Proposed Road Prism

Benchmark

Install poly-coated steel CMP arch

Remove existing CMP

Wrap entire bedding section in geotextile

Construction Notes:

- Remove existing 36" CMP. Maximum trench slope of 1:1.

- Dewater crossing as specified in COR approved dewatering plan.

- Bedding material shall be an uncompacted 4" thick layer of 1/2" minus free draining material.

- Wrap entire bedding section in geotextile with full 24" overlap on top surface.

- Install 57" span 38" rise 56 ft long poly-coated CMP arch

- Set inlet and outlet inverts approximately 0.5 ft below stream bottom

- Set pipe slope at 6.3%

- Backfill trench with 3" minus material. Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

- Place 2 cy. class 1 rip rap outlet protection

Rip Rap outlet protection

Inlet Invert, 1820.20

Bevel Bottom, 1821.20

Bevel Crown, 1825.97

Outlet Crown, 1824.50

Outlet Invert, 1818.50

1819.00

1834.00 1834.20

1834.00

1819.00

Spike in 10" DBH Aspen 25 ft R of Road Edge 200 ft SE of Culvert,

1832.2 Crown of 48" CMP inlet, 1832.54

1817.00

1818.00

1819.00

1820.00

1821.00

1822.00

1823.00

1824.00

1825.00

1826.00

1827.00

1828.00

1829.00

1830.00

1831.00

1832.00

1833.00

1834.00

1835.00

-70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

El ev at io n ft

Horizontal Distance (ft)

MP 13.793 Culvert Cross Section

Existing Culvert

Existing Road Prism

New Culvert

New Road Prism

Thalweg

Benchmark

48" CMP

Remove existing

CMP

Install poly-coated steel

CMP

Construction Notes:

- Remove existing 36" CMP. Maximum trench slope of 1:1.

- Dewater crossing as specified in COR approved dewatering plan

- Bedding material shall be an uncompacted 6" thick layer of 1/2" minus free draining material.

- Wrap entire bedding section in geotextile with full 24" overlap on top surface.

- Install 72" diameter 76 ft long poly-coated CMP

- Pipe shall have 5 x 1 corrugations and a 2:1 bevel cut inlet.

- Set inlet and outlet inverts approximately 1 ft below stream bottom

- Set pipe slope at 2.2%

- Backfill trench with 3" minus material. Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

Wrap entire bedding section in geotextile fabric

Bevel cut inlet

1843.7

1837.2

1834.2 1835.8

1841.1

Inlet Invert, 1820.2

Inlet Crown, 1826.2

Outlet Invert, 1818.5

Outlet Crown, 1824.5

Spike in 10" DBH Aspen 25 ft R of Road Edge 200 ft SE of Culvert, 1832.2

+90 1+10 1+30 1+50 1+70 1+90 2+10 2+30 2+50 2+70 2+90 3+10 3+30 3+50 3+70 3+90 4+10 4+30 4+50 4+70 4+90 5+10 5+30 5+50 5+70 5+90 6+10

R el at iv e El ev at io n

Horizontal Station (ft)

MP 13.793 Road Profile

Proposed New Road Profile

Proposed New Pipe Inlet

Proposed New Pipe Outlet

Existing Road Profile

Remove Existing 36" CMP

48" CMP

Benchmark

MP 13.793, STA 3+40

Remove and replace existing CMP

STA 4+75

48" diameter poly-coated CMP leave in place

Inlet Thalweg Elevation 1821 ft

Outlet Thalweg Elevation 1819.5 ft

Inlet Invert, 294.0

Inlet Crown, 297.6

Outlet Crown, 296.8

Outlet Invert, 293.2

299.8

299.8

293.8

BM - top of rock 30' W of inlet, 20' beyond road edge, 300

-50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35

R e la ti ve E le va ti o n ft

Horizontal Station (ft)

MP 16.407 Culvert Cross Section

Existing Culvert

Existing Road Prism

Proposed New Culvert

Proposed Road Prism

Water Surface

Stream Channel Bottom

Benchmark

Construction Notes:

- Remove existing 57" x 38" CMP arch. Maximum trench slope of 1:1.

- Dewater crossing as specified in COR approved dewatering plan

- Bedding material shall be an uncompacted 6" thick layer of 1/2" minus free draining material.

- Install 64" span, 43" rise, 46 ft long poly-coated steel CMP arch

- Set inlet and outlet inverts approximately 0.5 ft below stream bottom

- Set pipe slope at 1.7%

- Backfill trench with 3" minus material. Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

- Ditch 200' downhill from inlet basin to direct flow

Install poly-coated CMP arch

Remove existing CMP arch

Bedding section

Inlet Invert, 294.5

Inlet Crown, 297.3

Outlet Crown, 293.9

Outlet Invert, 291.1

31, 291.3

10, 301.8

0, 302

-10, 301.8

-22, 295.8

Spike In 10" DBH Balsam Fir 34' upstream of L edge Rd, 300

-50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45

R el at iv e El ev at io n ft

Horizontal Station (ft)

MP 16.562 Cross Section Profile

Existing Culvert

Existing Road Prism

Water Surface

Stream Channel Bottom

Proposed Culvert

Proposed Road Prism

Benchmark

Bedding section

Construction Notes:

- Remove existing 24" CMP. Maximum trench slope of 1:1.

- Dewater crossing as specified in COR approved dewatering plan

- Bedding material shall be an uncompacted 4" thick layer of 1/2" minus free draining material.

- Install 49" span 33" rise 52 ft long poly-coated CMP

- Set inlet and outlet inverts approximately 0.5 ft below stream bottom

- Set pipe slope at 6.5%

- Backfill trench with 3" minus material. Compaction method 2 (209.10b).

- Taper fill slopes to maximum of 2:1

- Place 2 cy. class 1 rip rap at outlet

Remove existing CMP

Install poly-coated steel CMP arch

Rip rap outlet protection

File details come from the government source that posted it. Updated .