3._General_Notes_Road_Logs.pdf

SMITH RIVER NRA STORMPROOFING

GENERAL NOTES-ROAD LOGS

GENERAL NOTES

Section 303 – Reconditioning: This work consists of reconditioning ditches, shoulders, roadbeds, and aggregate surfaces of the entire roads listed in the road logs, including cleaning culverts, grading with water, and roller compaction. Reconditioning will also include some slide and slough removal at locations noted in the road logs. Roadside vegetation removal is considered incidental and is the contractor’s responsibility to the extent of accomplishing the items of work.

Section 602 – Culverts and Drains: Information given for specific culverts is approximate and intended only to give the contractor a general idea of the degree of effort required for excavation. Field visits are recommended. Linear dimensions listed are from the edges of the road along the ground slope to the end of the culvert. Fill estimations are approximately the amount of embankment associated with each site, and are not the estimated excavation quantities to replace the pipe.

Do not order or install culverts until the CO has accepted the final structure size, length, and alignment. As noted in Specification 602.03-General, the contractor shall measure each culvert and submit the list to the contracting officer prior to ordering pipe.

Sites with flowing water need to be dewatered before the old culvert is removed and until the new culvert is installed.

Existing culverts to be replaced are not designated for salvage and shall be disposed of according to 203.05-Disposing of Material, Section a) Remove from project and off government lands.

Pipe sections shall be joined using watertight coupling bands as shown in the drawings.

Final shaping of the road at culvert installation sites shall be constructed to divert water off the road surface in the event of culvert failure. This shall be accomplished by shaping a dip in the road over the culvert location, or installing a rolling dip downgrade of the culvert at the soonest possible location. If the drainage dip cannot be placed directly over the disturbed area of each culvert installation, place 36 tons of surface aggregate on the road surface over disturbed area of each culvert installation.

Spread government furnished seed evenly on disturbed areas, at approximately 25 pounds per acre, prior to mulching with straw. Use a hand-held spreading machine.

Pay Item 20420 – Drivable Drainage Dip: This pay item includes the excavation, shaping, outlet riprap, aggregate surfacing, and roller compaction for rolling dip installation. Drainage dips at each culvert installation site are included in the Schedule of Items under Pay Item 20420.

Drainage dip locations will be staked on the ground at the outlet. Approximately 30% of the rolling dips will require approximately three cubic yards of Class 2 riprap at the outlet. These will be noted in a road log to the contractor. Riprap will come from a commercial source, or can be obtained from slide and slough material along the side of the road with the engineers approval.

Machine place outlet riprap.

Weight slips are required for surface aggregate. 36 tons of surface aggregate shall be spread the full length of the constructed dip, the full width of the road, and at a 4 inch compacted depth.

Surface aggregate for the rolling dips is from a commercial source having a gradation of ¾ - 1 ½ -inch minus. The requirements are in Specification 308 – Minor Crushed Aggregate. Roller compaction at the optimum moisture content is required.

The inlet side of rolling dips shall be secured into the cutbank edge of the road. When the rolling dip is located in an area with a ditch, the inlet shall intercept the ditch. The elevation of the dip shall be such that water will enter the dip from the ditch, and the ditch shall be blocked so water cannot bypass the rolling dip and continue past the dip in the ditch.

Pay Item 62530 – Mulching, Straw Bales: Spread uniformly across disturbed ground on fill slopes at culvert installation sites, at a rate of two bales per culvert installation. Mulch shall be wood straw, or certified weed-free straw.

Pay Item 65002 –Earthen Mound Barrier: The intent of this road closure device is to block vehicle access. This shall be accomplished by installing a barrier that occupies the full width of the road in accordance with Sheet 8 in the plans.

ROAD LOGS

Road MP Description of Work

15N36N 0.00 Recondition Road to End 15N36N 0.02 Drainage excavation, Rolling Dip Type 2 with aggregate 15N36N 0.09 Drainage excavation, Rolling Dip Type 2 with aggregate 15N36N 0.87 Drainage excavation, Rolling Dip Type 2 with aggregate 15N36N 1.32 Road Ends - Int. with spur to left

16N03K 0.00 Recondition Road to End 16N03K 0.10 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 0.20 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 0.30 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 0.45 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 0.50 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 0.54 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 1.08 Drainage excavation, Rolling Dip Type 2 with aggregate 16N03K 1.44 Road ends

16N16 0.00 Recondition Road to End 16N16 1.50 Road Ends

16N18A 0.00 Recondition Road to End 16N18A 0.09 Install Drop Inlet on existing 18" CMP 16N18A 0.14 Install Drop Inlet on existing 18" CMP 16N18A 0.99 Replace 24" CMP w/ 24" CMP, 50' long, install Metal End Section 16N18A 1.16 Replace 24" CMP w/ 24" CMP, 50' long, install Metal End Section 16N18A 1.23 Replace 24" CMP w/ 36" CMP, 60' long 16N18A 1.24 Replace 48" CMP w/ 48" CMP, 40' long, install Metal End Section

16N18A 1.26 Road ends

16N19 0.00 Int with 17N07 - Recondition Road to End 16N19 0.06 Int with B spur 16N19 0.34 Int with A spur on right 16N19 0.66 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 1.11 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 1.33 Bridge over Coon Creek 16N19 2.31 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 3.84 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 3.92 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 3.97 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 4.08 Drainage excavation, Rolling Dip Type 2 with aggregate 16N19 4.10 Int with 16N34, F and G spurs 16N19 4.72 Int with D spur on left 16N19 8.02 End Project work

16N02L 0.00 Recondition Road to End 16N02L 0.16 Replace 24" CMP w/ 24" CMP, 40' long, install drop inlet 16N02L 0.88 Drainage excavation, Rolling Dip Type 2 with aggregate 16N02L 1.01 Drainage excavation, Rolling Dip Type 2 with aggregate 16N02L 1.24 Replace w/ 24" CMP, 40' long.

16N02L 1.52 Install NEW 24" CMP, 40' long.

16N02L 1.67 Road ends

16N36B 0.00 Recondition Road to End 16N36B 0.39 Drainage excavation, Rolling Dip Type 2 with aggregate 16N36B 0.46 Drainage excavation, Rolling Dip Type 2 with aggregate 16N36B 0.61 Drainage excavation, Rolling Dip Type 2 with aggregate 16N36B 0.79 Drainage excavation, Rolling Dip Type 2 with aggregate 16N36B 0.91 Replace with 48-inch CMP, 60-feet long, match channel grade 16N36B 1.00 Road ends at landing

16N37 0.00 Int with 16N41 - Recondition Road to End 16N37 0.05 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 0.07 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 0.33 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 0.40 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 0.43 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 0.47 B spur to left 16N37 0.57 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 0.60 Drainage excavation, Rolling Dip Type 2 with aggregate

16N37 0.64 Install NEW 24-inch CMP, 30-feet long 16N37 0.71 Replace with 48-inch CMP, 40 feet long 16N37 0.90 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 1.03 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 1.07 Spur to left 16N37 1.35 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 1.50 Drainage excavation, Rolling Dip Type 2 with aggregate 16N37 1.55 Road ends at landing

16N41 0.00 Int with Co Rd 405 - Recondition Road to End 16N41 0.10 Int with 16N37 to right 16N41 0.15 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.19 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.25 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.30 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.38 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.43 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.47 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.53 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.57 Drainage excavation, Rolling Dip Type 2 with aggregate 16N41 0.67 Spur to right 16N41 0.96 Road ends at landing

17N36 0.00 Recondition Road to End 17N36 0.70 Drainage excavation, Rolling Dip Type 2 with aggregate 17N36 0.80 Drainage excavation, Rolling Dip Type 2 with aggregate 17N36 0.90 Drainage excavation, Rolling Dip Type 2 with aggregate 17N36 1.00 Drainage excavation, Rolling Dip Type 2 with aggregate 17N36 1.10 Drainage excavation, Rolling Dip Type 2 with aggregate 17N36 1.13 Replace with 48-inch CMP, 50 feet long 17N36 1.26 Drainage excavation, Rolling Dip Type 2 with aggregate 17N36 1.74 Replace with 36-inch CMP, 40 feet long 17N36 2.57 Road ends

17N39 0.00 Recondition Road to End 17N39 0.23 Install NEW 24-inch CMP, 30 feet long 17N39 0.28 Drainage excavation, Rolling Dip Type 2 with aggregate 17N39 0.40 Drainage excavation, Rolling Dip Type 2 with aggregate 17N39 0.56 Drainage excavation, Rolling Dip Type 2 with aggregate 17N39 1.01 Remove Humboldt, install NEW 36-inch CMP, 30 feet long 17N39 2.40 Road ends

17N40 0.00 Int. with Co Rd 411 - Recondition Road to End 17N40 0.02 Drainage excavation, Rolling Dip Type 2 with aggregate 17N40 0.05 Drainage excavation, Rolling Dip Type 2 with aggregate 17N40 0.07 Int. with D spur on right 17N40 0.39 Int. with 17N46 on right 17N40 0.40 Drainage excavation, Rolling Dip Type 2 with aggregate 17N40 0.43 Drainage excavation, Rolling Dip Type 2 with aggregate 17N40 0.63 Int. with B spur on right 17N40 0.84 Drainage excavation, Rolling Dip Type 2 with aggregate 17N40 1.10 Drainage excavation, Rolling Dip Type 2 with aggregate 17N40 1.30 Road Ends - Install barrier

17N41 0.00 Int. with Co Rd 411 - Recondition Road to End 17N41 0.10 Drainage excavation, Rolling Dip Type 2 with aggregate 17N41 0.40 Replace with 24-inch CMP, 40 feet long 17N41 0.60 Drainage excavation, Rolling Dip Type 2 with aggregate 17N41 0.70 Drainage excavation, Rolling Dip Type 2 with aggregate 17N41 1.10 Replace with 36-inch CMP, 30 feet long 17N41 1.50 Drainage excavation, Rolling Dip Type 2 with aggregate 17N41 1.60 Road Ends - Install barrier