Project Library

The Rancho Pipeline Expansion Project for Enterprise Products included the construction of 86 miles of 36-inch pipeline near Houston, TX. A total of 18 horizontal directional drills, 14,600 feet of bores, and the placement 62,000 timber mats were needed to complete the project.

Rockford constructed 31.4 miles of 42-inch in OH for Kinder Morgan/Conoco Phillips.

Rockford constructed Spreads 6 and 7 of the Ruby Pipeline Project for El Paso Natural Gas which ran from Vya, NV to Malin, OR. Totaling 127 miles of 42-inch pipeline, this challenging project included winter work, multiple winch line hills, large waterbody crossings, and the utilization of over one million pounds of dynamite for the excavation of both grade and ditch rock.

Rockford constructed Spread 6 of the Sabal Trail Pipeline Project as well as the Hunter Creek Lateral for Spectra which consisted of 76.6 miles of 36-inch pipeline that ran from Near Wildwood, FL south to Kissimmee, FL. Included in this project were 6 horizontal directional drills, 30 road bores, 6 mainline valves, and the utilization of 135,000 timber mats.

Rockford constructed over 125 miles of 8-inch to 24-inch in PA for Williams Midstream.

This project involves a complicated, single microtunnel drive with the installation of 372 feet of 96-inch diameter steel casing pipe launched from a chamber tunneled under the Anderson Dam and recovered in the Anderson Reservoir. The microtunnel boring machine (MTBM) lake tap is launched from inside of a 24-foot Horseshoe tunnel mined chamber under the Anderson Dam, this 1,600-foot conventional tunnel will incorporate steel horseshoes and a reinforced concrete lining. A reaction frame and portal launch seal are used to tunnel from the chamber to a lake tap Landing pad deep below the surface of the Anderson Reservoir where the MTBM is recovered using specialty divers, barges, and cranes.

This project consisted of a single microtunnel drive of 696 feet of 64-inch diameter x 0.75-inch wall Trinity Products Tri-Loc Weldless Steel Casing. The microtunnel was installed under two frontage roads, an active railroad, and four lanes of Interstate 90 progressing through silts, sands, gravels, cobbles, and boulders beneath the groundwater table.

This project consists of installing fiberglass reinforced pipe (FRP) sanitary sewer totaling approximately 3,600 feet of 42-inch diameter and 990 feet of 48-inch diameter. The pipe installation is completed in five separate tunnel drives all at approximately 30 to 35 feet in depth with the tunnel reaches varying from approximately 700 feet to 1,000 feet. The entirety of the project is below the natural groundwater table through soils that are saturated with contaminated water requiring extensive coordination with the City of Houston to provide water-tight shafts and mitigate all potential environmental impacts.

This project consists of installing 140 feet of 24-inch diameter sacrificial steel casing using microtunnel beneath an existing concrete-lined channel and storm drain/sanitary sewer while providing a minimum depth of cover of 18 feet below the channel bottom and 10 feet of vertical separation from an existing 33-inch storm drain. Shafts for microtunnel work were approximately 35 feet deep and the microtunnel progressed through primarily sandy soils approximately 30 feet below the groundwater table utilizing the sacrificial case-and-displace method with steel casing pipe to install the steel gas pipe.

This project consisted of a new 54-inch diameter force main sewer extending 10,392 feet in length, originating from a newly constructed manifold. From the manifold the alignment made its way beneath the Marina Del Rey Harbor inlet and Ballona Creek channel, continuing south under Pacific Avenue and Vista Del Mar to its terminus. The majority of the new 54-inch diameter line was constructed via microtunneling, predominately direct-jacked reinforced concrete cylinder pipe (RCCP) but also included 2,800 feet of 80-inch diameter Permalok Steel Casing with RCCP carrier and 1,800 feet of 88-inch diameter reinforced concrete pipe (RCP) with a 54-inch diameter fiberglass reinforced pipe (FRP) carrier. One of the tunnel drives included two horizontal curves and one vertical curve climbing 50 feet. The project also consisted of the demolition of existing equipment, procurement, and installation of three new generators along with ancillary controllers, transfer switches, and exhaust and cooling systems at a pumping plant. The generators that were furnished and installed included two 750 kilowatts (kW) and one new 1,500 kW complete with emissions control systems and fluid storage.