725Temporary Detour Roads

725.01 DESCRIPTION. Furnish construct, maintain, and subsequently

remove temporary detour roads. Plan details and specified materials for temporary detour roads indicate minimum requirements. Other approved designs and materials may be used at the option of the contractor.

725.02 MATERIALS. Materials for detour roads, except low profile

runarounds, shall comply with applicable sections of these specifications. Temporary culvert pipe shall be one of the types listed in Section 701. Temporary fencing shall be of a type acceptable to the engineer. Temporary pavement markings shall comply with 1015.08.

725.03 Construction Requirements.

725.03.1 General: Perform all necessary additional clearing and

grubbing, and provide all necessary temporary fencing and culverts for detours. Place construction signs, warning devices, and pavement markings for detours in accordance with Section 713 prior to opening to traffic. Maintain detours in a satisfactory condition.

725.03.2 Detour Roads: Furnish all embankment material for

detours and compact embankments by approved methods to the satisfaction of the engineer. When embankment is placed against slopes of existing embankments, remove from such slopes all grass, weeds, trash, brush, and other objectionable material and construct slopes to form steps as directed. Perform base and wearing surface construction in accordance with applicable sections of these specifications. Place temporary pavement markings complying with Section 713 on detours surfaced with asphalt concrete or portland cement concrete. Place these markings before the detour is opened to traffic. Remove existing markings in tie-in areas. Include temporary pavement markings to make tie- ins to existing striping in the cost of these markings.

725.03.3 Low Profile Runaround: Surface low profile runaround

type detour roads with approved aggregate. Place aggregate surfacing to a minimum depth of 4 inches and a minimum width of 20 feet. Obtain the engineer’s approval of alignment and grade of runaround type detour roads. Provide satisfactory drainage for low profile detours.

725.03.4 Detour Bridging: Construct and remove temporary detour

bridging in accordance with Section 817.

725.04 REMOVAL OF DETOURS. Upon completion of permanent

construction and diversion of traffic thereto, remove detour roads, temporary fencing and culverts, eliminate construction scars, and seed and fertilize to restore the area to its original condition as directed. When not covered under other items, replace permanent fencing in kind as directed. Remove temporary markings on existing surfaces in accordance with Section 713.

725.05 Measurement.

725.05.1 Detour Roads: Temporary detour roads will be measured

by the square yard of completed detour road surfacing.

725.05.2 Low Profile Runaround: Low profile runarounds will be

measured per each runaround.

725.05.3 Incidentals: Additional clearing and grubbing, temporary

fencing and culverts, will not be measured for payment. When the contract does not include items for “ Temporary Pavement Markings,” these markings will be included in the items for “Temporary Detour Roads.”

725.06 PAYMENT. Payment for temporary detour roads furnished,

constructed, maintained, and subsequently removed will be made at the contract unit prices under: Item No. Pay Item Pay Unit 725-01 Temporary Detour Roads Square Yard 725-02 Low Profile Runaround Each