fr199_streamcrossing_worklist.pdf

AG-569R-S-16-0048 FR 199 Stream Crossing Stabilization

FR 199 & STREAM CROSSING STABLIZATION

CHEQUAMEGON-NICOLET NATIONAL FOREST

GREAT DIVIDE RANGER DISTRICT

ASHLAND AND BAYFIELD COUNTIES, WI

General Notes

1) CONSTRUCTION SPECIFICATIONS: Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects, FP-03 U.S. Customary Units, shall apply to this contract.

2) Compaction method for surfacing and pit run on this contract shall be method A:

Operate hauling and spreading equipment over the full width of the traveled way, EXCEPT for fills deeper than 12” where compaction method shall be method B, with rollers.

3) Contractor shall prepare gullies for backfill by blading the irregular edges of the gully to a uniform trapezoidal shape.

4) Maintenance for traffic will be the responsibility of the Contractor. Road closures will be in accordance with the Manual of Uniform Traffic Control Devices (2003) guidelines.

This work shall be considered incidental to Pay Item 15101-Mobilization.

5) Contractor shall not perform work on these projects during abnormally high flows or abnormally wet periods.

6) All suitable structure excavation shall be used as backfill material for the culverts and washouts. Culverts shall be bedded using suitable material from the excavation.

7) All areas of excavation shall match the existing road template on either side of the crossing being replaced.

8) All disturbed slopes shall be seeded with the seed mix listed below and mulched with straw.

9) Seed mixture: Big Bluestern, 10%; Sideoats Grama, 20%; Canada Wild Rye, 35%;

Annual Rye, 10%; Little Bluestern, 10%; Indiangrass, 10%, Purple Prairie Clover, 4%;

Black-eyed Susan, 1%. Seeding rate: 30.49 lbs/ ac

Item Number

Description

Method of

Meas. Unit Quantity

15101 Mobilization DQ LS

1.00

15713 Soil erosion and Pollution Control DQ LS

20304 Removal of Existing Culverts, Disposal Method "A' DQ EACH 2.00

20418 Waste Excavation DQ CY

150.00

25101 Placed Riprap, Class 3 DQ CY

10.00

32211 Agg. Surf., Comp. A&B, Truck Volume DQ CY

2,050.00

32222 Pit-Run Aggregate, Max. size 4", Comp.

A&B, Truck volume DQ CY

2,410.00

60201-1 Galvanized Pipe Culverts, 17"x13" Dia. DQ LF 30.00

60201-2 Galvanized Pipe Culverts, 21"x15" Dia. DQ LF 42.00

60201-3 Reset existing Galvanized Pipe Culvert, 17"x13" Dia. DQ LF

32.00

62503 Seeding, Dry Method DQ LS

62901 Erosion Control Mat, Type ENS-2 DQ SY

1090.00

63501 Temporary Traffic Control DQ LS

64899 Stream Crossing Stabilization DQ EACH 3.00

FR199 Station (mi) Notes

0.000 Intersection with Lovers Lane Road.

0.549 Ditch reconditioning left for 250’. Install straw bale ditch checks every

50’.

0.669 Gully wash. Place 150 CY surfacing.

0.870 Gully Wash. Place 60 CY pit run. Place 200 CY surfacing.

1.305 Road completely gullied out.

-Replace destroyed cross drain with 15”x21”x40’ CMP. Set at less skew than original. Ensure good lead-out drainage from outlet. Place 5 CY of riprap to armor inlet and outlet.

-Remove four small trees and scatter outside clearing limits.

-Place 1,600 CY pit run to fill in roadway.

-Place 160 CY pit run to fill in ditch on right.

-Construct 300’ of ditch on left w/ lead-out ditch near culvert outlet.

-Remove 150 CY of outwash (waste excavation) from bottom of hill.

Dispose off FS property.

-Place 175 CY of surfacing over entire roadway width, 6” deep, 300’ length.

-Install straw bale ditch checks every 50’.

-Place 540 SY of erosion control mat in ditches.

1.386 Half of road washed out at bottom of hill. Place 170 CY pit run. Place

130 CY surfacing. Install 100 SY of erosion control mat on downstream road slope. Gully wash up next hill, place 60 CY surfacing.

1.535 Gully wash. Place 70 CY surfacing.

1.673 Gully wash. Place 100 CY pit run. Place 100 CY surfacing.

1.786 All surfacing washed away at Morgan Creek bridge approach. Place 300

CY surfacing full width, 12” deep, 260’ length.

1.904 Gully wash left then right. Place 100 CY pit run. Place 200 CY surfacing.

Remove, clean, and reset 13”x17”x32’ CMP.

1.981 Complete road gully that has been partially rebuilt. Replace 13”x17”x16’

CMP with 13”x17”x30’ on skew. Salvage existing CMP. Place 5CY riprap to armor inlet and outlet. Widen shoulder 4’ with pit run, 220 CY. Place

190 CY surfacing 16’ width, 6” depth over length of rebuilt area. Place

450 SY of erosion control mat on shoulders / ditches.

2.080-2.360 Continuous gullies on both road edges. Place 475 CY surfacing.

2.360 Intersection with side road. End of project.

Stream Crossing Notes FR 189 – Spring Brook Large washout around 131” x 85” x 44’ multi-plate culvert. Remove culvert and set aside. Salvage culvert if possible. Pull road fill back on both sides of washout to 2H:1V slope. Use excavation material to construct a berm that blocks the entire roadway. Install silt fence around berms. Existing road fill is approximately 8’ deep and roadway width is 20’. Stabilize exposed slopes with 4 oz. non-woven geotextile.

Tuck ends of geotextile into ground 6” and use stakes or staples to adequately attach geotextile to slope. Line toe of slope at edge of stream with large rocks, if available on site.

FR 377 – Twentymile Creek West bridge approach is washed out. Remove hanging guardrail and set aside. Remove trees from stream in the immediate vicinity of the bridge. Scatter beyond treeline on south side of road. Pull road fill back on west side of washout to 2H:1V slope. Use excavation material to construct a berm that blocks the entire roadway. Install silt fence around berm. Existing road fill is approximately 10’ deep and roadway width is 24’. Roadway is paved with 3” of asphalt. Separate asphalt into a separate pile and stockpile on roadway. Stabilize exposed slopes with

4 oz. non-woven geotextile. Tuck ends of geotextile into ground 6” and use stakes or staples to adequately attach geotextile to slope. Line toe of slope at edge of stream with large rocks, if available on site.

FR 371 – Eighteenmile Creek Large washout around 152” x 96” x 56’ multi-plate culvert. Remove culvert and set aside. Salvage culvert if possible. Remove approximately

12 trees from stream, mostly 4-6” diameter, some 8-10”. Dispose of trees in Rogers Lake Pit (T44N, R7W S10) or other FS gravel pit with COR approval, or off FS property. Pull road fill back on both sides of washout to 2H:1V slope. Use excavation material to construct a berm that blocks the entire roadway. Install silt fence around berms. Existing road fill is approximately 12’ deep and roadway width is 24’. Stabilize exposed slopes with 4 oz. non-woven geotextile. Tuck ends of geotextile into ground 6” and use stakes or staples to adequately attach geotextile to slope. Line toe of slope at edge of stream with large rocks, if available on site.