for Highway Construction Page 138 of 71 5 SECTION 204 – OBLITERATION OF OLD ROAD
204.01 Description.
Shape and blend abandoned roads into the surrounding area, after the pavement is removed, as specified in 203 or as directed.
204.02 Materials.
Not specified.
204.03 Construction Requirements.
When the old road requiring obliteration is no longer needed for traffic: Fill ditches. Rough grade, scarify, harrow, and blade the entire road to present a pleasing appearance with slopes rounded and flattened to blend naturally with the adjacent topography. Break down, bury, or remove structures as specified where a contract pay item is not included in the contract. When specified, remove pavement as specified in 203.03.A, including removal of asphalt ic or portland cement concrete pavement down to unbound base or subbase material. For areas to be vegetated, remove or scatter unbound base and subbase material so that adequate friable soil conditions suitable for planting or seeding can be achieved as per Sections 620 and 621.
204.04 Method of Measurement.
The Engineer will measure acceptably completed work by lump sum.
204.05 Basis of Payment .
The Department will pay for acceptable quantities as follows: Pay Item Pay Unit Obliteration of Old Road ......................................................................... LS If a contract pay item does not exist for pavement removal, the work is incidental and the cost included in other earthwork contract pay items . for Highway Construction Page 139 of 71 5 SECTION 205 – EXCAVATION AND EMBANKMENT
205.01 Description.
Excavat e, haul, dispose of, place, and compact specified materials necessary to construct the work.
A.Excavation . This work includes excavation performed under this contract pay item regardless of the material encountered. The Department may divide excavation into schedules.
B.Blasting. Use explosives to fragment rock. Perform the blasting operations in accorda nce with the Engineer -approved blasting plan.
C.Embankment . Construct embankments with soil, aggregates, rock, or other materials.
1.Soil Embankment. Embankments with materials that can be tested for in- place dry density in accordance with the WAQTC FOP for AASHTO T 310 Method B.
2.Rock Embankment. Embankments with materials that are too granular to test as specified in Table
205.03 1.
3.Embankment with other materials. Embankments constructed with other materials instead of soil or rock, if specified. These materials include wood fibers, light -weight concrete, recycled glass, and geofoam. Use recycled glass that meets the requirements of 720.05.
D.Shoulder Grading. Blade, process, and finish material on the roadway shoulders to match the typical plan section.
E.Soft Spot Repair. Excavate and repair soft spots as directed. The Engineer will identify soft spot repair locations on the project site. Additional areas beyond plan quantity may be identified.
F.Guardrail Terminal Grading. Construct guardrail terminal grading.
205.02 Materials.
A.Borrow . Obtain borrow from designated or approved sources.
B.Granular Borrow . Provide sand, sand and gravel, or sand and rock mixtures obtained from designated or approved sources. If the material has a sand equivalent less than 30, it must have less than 5 percent passing the No. 200 sieve, in accordance with AASHTO T 27 / T 11. The Contractor may use RAP as granular borrow when approved. Mix RAP in approximatel y equal proportions with material meeting the granular borrow requirements.
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Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 174–174 of 768. View official source ↗