La. Admin. Code tit. 70 § II-1707

Current through Register Vol. 50, No. 11, November 20, 2024

Section II-1707 - Cables Crossing the Highway

A. Crossings shall have at least 5 feet of cover below the roadway and 24 inches of cover below ditches or drainage structures.

B. Crossings shall be made at as nearly right angles to the highway as possible. No existing drainage structure under the highway may be used for this purpose.

C. Construction methods used shall be in accordance with the following requirements.

1. Cutting the surface or tunneling under it is specifically prohibited.

2. Installation shall be made either by boring or jacking under the highway from ditch bottom to ditch bottom. In the absence of ditches, or along sections of highway with curb or gutter, boring or jacking shall extend beyond the outside edge of the traveled way to a point at least equal to three times the vertical difference between the elevation of the roadway surfacing and the elevation of the top of the cable. Where width of right-of-way is insufficient to enable compliance with this requirement or where it is necessary to make a connection to an existing parallel facility which precludes compliance, the distance shall be computed to the right-of-way line or to the parallel facility. Any voids or overbreaks resulting from this task shall be backfilled with grout consisting of a cement mortar or a slurry of fine sand or clay, as conditions require. Excavating an open ditch to the edge of the pavement and boring and jacking the remainder of the distance is prohibited. Jacking and boring shall be done in accordance with Section 728 of the Louisiana Standard Specifications for Roads and Bridges, latest edition.

La. Admin. Code tit. 70, § II-1707

Promulgated by the Department of Transportation and Development, Office of Highways/Engineering, LR 25:2465 (December 1999).

AUTHORITY NOTE: Promulgated in accordance with R.S. 48:381.2.