610APPROACHES AND CROSSOVERS

610.01Description

This work shall consist of constructing or resurfacing public road intersections; turn lanes, passing lanes, acceleration lanes, deceleration lanes, or recovery lanes where the total longitudinal dimension is less than 100 ft, excluding tapers; mailbox approaches; private and commercial driveways; and crossovers; in accordance with

105.03

MATERIALS 10

610.02Materials

Materials shall be in acco rdance with the following:

Aggregate Base ............................................................ 301.02 Geogrid, Type IB ......................................................... 918.05 HMA ............................................................................ 402.03 PCCP ........................................................................... 502.02 Prime Coat ................................................................... 405.02 Seal Coat ..................................................................... 404 20 Subbase ........................................................................ 302.02 Tack Coat .................................................................... 406.02

CONSTRUCTION REQUIREMENTS

610.03General Requirements

Subgrade for approaches shall be prepared in accordance with 207. Aggregate base shall be constructed in accordance with 301. HMA for approaches shall be constructed in accordance with 402. HMA mixture for approaches shall be HMA surface or intermediate, Type B, Type C, or Type D in accordance with 402.04. An 30 MAF, in accordance with 402.05, will not apply.

Dense graded subbase shall be constructed in accordance with 302. PCCP for approaches shall be constructed in accordance with 502. The CMDS shall be submitted to the Engineer for approval. Utilization of the Department provided spreadsheet is not required.

610.04Existing Approaches and Crossovers

If an existing surface is to be left in pl ace as an approach pavement or crossover, 610.04

the surface shall be patched in accordance with 304.04 or 305.04, or as directed. 40 Existing approaches or crossovers that have been rubblized shall be primed in accordance with 405 prior to being paved.

610.05Method of Measurement

Compacted aggregate base will be measured in accordance with 301.09. HMA mixture for approaches will be measured by the ton of the type specified, in accordance with 109.01(b). Dense graded subbase will be measured in accordance with 302.08. PCCP for approaches will be measured by the square yard of the thickness specified. Subgrade treatment will be measured in accordance with 207.05.

HMA patching in accordance with 610.04, will be measured by the ton in accordance with 304.06. PCCP patching in accordance with 610.04, will be measured by the square yard in accordance with 305.06. Geogrid Type IB will be measured in accordance with 214.05.

Prime coat will be measured in accordance with 405.09. Tack coat will be measured in accordance with 406.06. Seal coat will be measured in accordance with

404.13

610.06Basis of Payment 60

The accepted quantities of HMA mixture for approaches will be paid for at the contract unit price per ton of the type specified, complete in place. Compacted aggregate base will be paid for in accordance with 301.10. PCCP for approaches will be paid for at the contract unit price per square yard of the thickness specified, complete in place. Dense graded subbase wi ll be paid for in accordance with 302.09. Subgrade treatment will be paid for in accordance with 207.06. Geogrid Type IB will be paid for in accordance with 214.06.

HMA patching will be paid for in accordance with 304.07. PCCP patching will be paid for in accordance with 305.07. 70

Prime coat will be paid for in accordance with 405.10. Tack coat will be paid for in accordance with 406.07. Seal coat will be paid for in accordance with 404.14.

The quantities of materials placed on the 3 ft wedge on approaches, when placed with the mainline pavement shall be included in the mainline HMA items and paid for in accordance with 401.22 or 402.20. The quantities, when placed separately from the mainline pavement, shall be included in the quantities for HMA for approaches and paid for in accordance with 610.06.

The quantities of materials for the paving or resurfacing of turn lanes, passing lanes, acceleration lanes, deceleration lanes, and recovery lanes greater than 100 lft, excluding tapers, shall be included in the mainline quantities and paid for in accordance with 401.22, 402.20, 501.31, or 502.23 whichever is applicable.

610.05

The accepted quantities of HMA material for mailbox approaches will be included with quantities required to construct the shoul der section when the shoulder is to be paved. If the shoulder is not to be pave d, the HMA material for mailbox approaches will be paid for as HMA mixture for approaches of the type specified.

Payment will be made under:

Pay Item Pay Unit Symbol

HMA for Approaches, Type * ........................................... TON PCCP for Approa ches, _____ .................................................... SYS thickness * Mixture type in accordance with 402.04.

The cost of excavation, shaping, leveling, forming, compaction, placing, and all 100 necessary incidentals shall be included in the cost of the pay items in this section.

The cost for curbing placed monolithically with the PCCP on approaches shall be included in the cost of PCCP for approaches.