N.J. Admin. Code § 16:25-3.11

Current through Register Vol. 57, No. 1, January 6, 2025

Section 16:25-3.11 - Trenchless construction and grouting

(a) Acceptable techniques for installing pipelines under a highway without disturbing the surface are driving, coring, and boring. Wet-boring will be permitted by the Department if all other techniques are impractical. Special care is required when using this method.

(b) The design and construction of pipelines under highways shall include:

1. Trenchless construction for all new or replacement pipeline crossings of highways. On limited access highways, at a minimum, the trenchless construction shall extend under and across the entire roadway prism. On other highways, the trenchless construction shall extend under and across the surfaced area of the highway;

2. Portal limits of pipeline crossings. The portal limits shall be beyond the surfaced areas of the highway to avoid impairing the roadway during the installation of the pipeline; and

3. Restricted size of the boring excavation. The Department will establish, on a case-by-case basis, the conditions under which the void outside the carrier must be back-filled with grout.

N.J. Admin. Code § 16:25-3.11