RAE Water & Sewer District 313
Wastewater Facility Upgrade
Bozeman, Montana

Allied Engineering was hired to finish an incomplete Preliminary Engineering Report that was abandoned by two previous consultants. The collection system within the District was suffering from severe leakage. An Infiltration and Inflow study was performed to evaluate problem areas and to establish a punch list of priority repair areas.

Allied completed the PER for the wastewater system improvements and was retained to complete the facility design. The $2.3 million upgrade to the Sewer District’s leaking wastewater lagoons is a state-of-the-art nutrient removal wastewater treatment facility and a sequencing batch reactor (SBR). This facility is the first of its kind to be constructed in Montana and will be the basis for new MDEQ design regulations for all future Sequencing Batch Reactors.

Allied provided complete civil engineering, structural engineering, construction inspection and testing services. Funding sources for the project include DNRC, CDBG, RUS, and TSEP.

 

Montana Department of Transportation (MDT)
U.S. Highway 93, McClure Rd. to N. Arlee Couplet
Arlee, Montana

Allied Engineering provided comprehensive design services for the reconstruction of a 6 mile segment of US-93 for MDT. This project was part of the large-scale design effort, under the Design Management team of Skillings-Connolly, to reconstruct 56 miles of US-93 from Evaro to Polson. The project was a unique partnership between MDT, FHWA, and the Confederated Salish and Kootenai Tribes and was considered a “landmark” project for this area of the country.

This project included: rural and urban roadway reconstruction, a new couplet around Arlee, reconstruction of twelve county roads, and accommodating extensive irrigation systems that cross or parallel the project. The downtown Arlee segment involved extensive landscaping, curb & gutter, decorative sidewalk, concrete intersections, decorative lighting, intersection ‘bulb-outs’ for pedestrian safety, ADA ramps to existing buildings, and on-street parking. There were also 1.5 miles of multi-use trail design planned for south of Arlee. The Hydraulics group designed a new storm drain system for Arlee, including retention and detention ponds, and a 2,300 foot open channel outfall. AESI also provided additional surveys, traffic warrant studies, pavement design, signing & striping plans, erosion control plans, geotechnical investigation, public involvement, and final plan set production.

There were many unique and challenging design issues throughout this complex corridor. These included sensitive environmental and tribal cultural issues, architectural designs, and wildlife considerations. Allied Engineering welcomed the extensive design coordination and detailed effort a project of this magnitude requires. This project gave us solid experience with coordination efforts between MDT, Design Management Team, Project Architects, Tribal Representatives, Flathead Agency Irrigation District, MRL, Arlee Sewer District, Utility Companies, and the residents of Arlee. The project was started in April 2002 and the design was completed in August 2004. The estimated construction cost was $15 million.

 

Montana Department of Transportation (MDT)
Boulder Main Street Reconstruction
Boulder, Montana

Allied Engineering designed this 0.6 mile urban reconstruction project through Boulder, Montana. This project involved extensive landscaping in medians, accommodating large truck movements, decorative sidewalks, on-street parking, water line adjustments, new storm drain system, outfall and detention pond, and ADA ramps to existing buildings. Allied also performed surveying, right-of-way, geotechnical, hydrology and hydraulics, traffic studies & evaluation, roadway design, signing & striping, and public involvement.

In order to resolve parking and driveway issues, Allied worked with a citizen’s group, business owners, schools, and residents. During the project, Allied also worked closely with the Town of Boulder to resolve other design issues. The project design was started in 1999 and the construction was completed in the summer of 2003. The construction cost was approximately $3 million.

 

Montana Department of Transportation (MDT)
Boulder River Bridge Reconstruction
Boulder, Montana

Allied Engineering was the prime consultant for this bridge replacement project, which connects to the Main Street Boulder Project. Allied performed all the surveying, right of way, geotechnical, hydrology and hydraulics, road design, traffic counts and a traffic evaluation, signing design and layout, and public involvement for the project.

Allied provided hydraulic modeling of existing bridge and recommended bridge alternatives using HEC-RAS River Analysis System software. Environmental work was sub-contracted to Hyalite Environmental, LLC and structural design was sub-contracted to Wells Engineers. The new bridge is a two span pre-stressed concrete structure about 54 meters in length. The design was completed in 2001.