Project Description

The Front Street Interceptor project in Bozeman, Montana included the installation of 7,600 linear feet of 18-inch, 21-inch, and 24-inch gravity sewer main and jack and bore crossings under both East Main Street and the railroad. New gravel access roads and a substantial amount of dewatering were also part of the project. The purpose of the project was to accommodate new development along East Main Street, Haggerty Lane, and any expansion to Bozeman Deaconess Hospital. The new main passed through the Montana Department of Transportation right-of-way, over 3,000 linear feet of wetlands, under railroad right-of-way, and under an old railroad bridge that was converted to a walking path.

Project Details

LOCATION: Bozeman, Montana
DURATION: 16 weeks
PROJECT TYPES: Underground Utilities

Unique Problem Solved

The new sewer main ranged from 8 feet to 18 feet deep and approximately 75 percent of the length of the project required significant dewatering. Over 80 dewatering wells were jetted into the ground to control groundwater. Other challenges on this project included approximately 13 existing utility crossings in the first 500 feet of the alignment, along with a fiber optic line and a gas line running parallel to the new main.