Client: Town of Kersey, Colorado
Description: The RGA team provided design and construction administration to the Town of Kersey.  9th Street is an arterial street that provides access to two (2) state highways. Platte Valley High School is adjacent to the street and was beginning improvements to its stadium. RGA coordinated with the school and designed street improvements that included an additional traffic lane with parking turnouts, curbs, gutters, walks, and speed control features. The project also included drainage inlets and outfall facilities. 

Client: City of Thornton, Colorado
Description: The RGA team was retained by the City of Thornton to prepare the design for the relocation of Riverdale Road at 104th Avenue. Originally two offset tee intersections, the project required the relocation of the southern leg of Riverdale Road to the east, and the relocation of the northern leg to an alignment immediately west of its present alignment, to accommodate the construction of a two cell box culvert structure. The project included the relocation of numerous irrigation canals and the design of a new mast arm traffic signal installation.

Client: City and County of Broomfield, Colorado
Description: The RGA team provided the design for reconstruction of 3,200 LF of collector roadway. The project included grading, paving, curb, gutter and sidewalk, landscaping and irrigation system along the perimeter and raised median, storm sewer, and water transmission line.

Client: Adams County, Colorado
Description: This project includes the planning, design, and construction administration for 1,000 LF of 20-inch DIP transmission main. 

Location: Brighton, Colorado
Description: The RGA team provided design and construction management services for the following roadway projects:

50th Avenue
Reconstruction of existing two-lane rural roadway to a four-lane minor arterial.  Improvements included grading, paving, curb and gutter, raised center median, storm drainage, signage, and striping. The project also included construction of accel/decel and turning lanes on the I-76 Frontage Road.  Approximately 2,700 LF of the frontage road was widened to accommodate the additional lanes. The design required CDOT review and approval.

I-76 Frontage Road Improvements
Providing access to residential and industrial site developments within the Bromley Park Metropolitan District required improvements to 6,300 LF of frontage roads. The improvements required grading, paving, storm drainage, signage, and striping. The design required CDOT review and approval.

Bridge Street (S.H. 7)
Grading, paving, storm sewer, curb and gutter, signage, and striping for adding additional lanes to 3,500 LF of Bridge Street. The project was the first phase of ultimately converting the two-lane rural highway into a six-lane major arterial street with a raised center median.

Client: City of Black Hawk, Colorado
Description: The RGA team performed the design and construction services for the preparation and paving of 1,800 feet of existing gravel streets in Black Hawk. The project included construction of 3,600 LF of concrete drainage pans, asphalt pavement for two driving lanes and miscellaneous asphalt roadside parking areas.

Description: The RGA team provided design and construction management services for the following roadway projects:

56th and Chambers Road, 56th and Tower Road, 64th and Tower Road, 88th and Tower Road
The RGA team prepared the final design for four intersection reconstruction projects including right-of-way research and analysis, geometric design, profiles, grading and drainage design and coordination with geotechnical engineers. Additionally, RGA provided the preliminary analysis, design, and cost estimates for 42 miles of existing roadways to be used as construction access for the Denver International Airport.

96th Avenue, Tower Road to West Cargo Road at Denver International Airport
The RGA team provided the design of 96th Avenue from Tower Road to the West Cargo Road at the Denver International Airport (two miles). Planned as a two-lane arterial, 96th Avenue was designed to accommodate heavy vehicles used in the construction of Denver's new airport.

6th Avenue Viaducts
The RGA team was retained by Nolte & Associates for traffic operations analyses and detour strategy development required for the widening and rehabilitation of the 6th Avenue Viaducts near downtown Denver.

20th Street Bus/HOV Corridor, Chestnut to Downtown
As a subconsultant to DeLeuw Cather & Company, the RGA team was retained by the Denver Regional Transportation District (RTD) to provide drainage and traffic engineering design services for the improvement of 20th Street from Chestnut to Arapahoe near the Denver Central Business District. Improvements in the 20th Street corridor included roadway widening, drainage improvements and bridge construction to accommodate a proposed exclusive bus/HOV lane from downtown to I-25.

Tower Road (56th Avenue to Peña Boulevard)  and 56th Avenue (Tower Road to Peña Boulevard)
The RGA team provided the design for Tower Road (4-lane arterial) from 56th Avenue to Peňa Boulevard, including a ramp connection to Peňa Boulevard. This project also included design of 56th Avenue from Tower Road to Peňa Boulevard and two signalized intersections.

Curb and Gutter Rehabilitation
Field investigation, design, and contract document preparation for the reconstruction of deficient curb and gutter throughout the City of Denver. In addition, citizen complaints and recommendations for curb and gutter repair were taken through a special telephone hotline answered at RGA’s office.

Streetscapes 16
Researched the location of existing utilities along streets designated for landscape reconstruction.

Evans Avenue Improvements
Research of existing utility locations and coordination for the reconstruction of Evans Avenue.

Monaco Parkway
Design of new curb and gutter, asphalt pavement overlay, and drainage between Colfax and Montview. The work also included traffic control plans, construction phasing, public involvement, and coordination with the Department of Parks and Recreation.

Ivy/Jasmine Street Improvements
Reconstructed two block-long residential streets which had deteriorated due to excessive settling. Work involved designing curb and gutter profiles, centerline profiles, drainage, and street cross-sections.  Design was intended to minimize disturbance to surrounding sidewalks, drives and landscaping as well as minimize the removal of existing asphalt.

Broadway Viaduct
As a subconsultant to Carter & Burgess, the RGA team was retained to assist in the assessment of options for the replacement of the aging Broadway viaduct.  The RGA team coordinated the identification of existing utilities in the corridor.

Alameda/Federal Intersection Reconstruction
The RGA team was retained by Felsburg Holt Ullevig to provide preliminary and final design engineering support services for the widening of the Federal/Alameda intersection. Right-of-way, urban design, and traffic control during construction were key considerations of this project to increase intersection capacity.

Client: Town of Superior, Colorado
Description: The RGA team designed and managed the reconstruction of approximately 1,800 LF of Coal Creek Drive, an area located in the historic “Original Town” part of Superior. Improvements included the removal of existing asphalt pavement and utilities, and construction of new asphalt, concrete curb, gutter, and sidewalk, sewer and water stub-outs, and a re-use irrigation system. Construction proceeded in phases to minimize disruption to residents and local businesses. The project also included extensive landscaping to upgrade the area’s aesthetic, while maintaining the historic feel of Original Town. 

Client: Colorado Technological Center Metropolitan District, Adams County, Colorado
Description: This roadway evaluation, rehabilitation, and improvement project consisted of approximately 4,000 LF of roadway and 4,500 LF or curb, gutter and sidewalk. The project required the construction of a portion of a UDFCD Drainageway, 5,000 LF of drainageway channel, major culvert crossings, and grouted boulder drop structures. RGA provided the design and construction administration for the project and coordinated the approvals with the Town of Louisville, UDFCD, concurrent lift station design, and various utility companies.

Client: Mesa County, Colorado
Description: The RGA team provided design and construction engineering services to Mesa County for one mile of collector streets. Project included grading, paving, curb and gutter, storm sewer to convey runoff from the 100-year event, signalized intersection, and relocation of one-half mile of open irrigation ditch.

Location: Douglas County, Colorado
Description: The RGA team provided design and construction management services for the following roadway projects:

Stonegate Boulevard
Grading, paving, curb and gutter, raised median, storm drainage, sanitary sewer, and water lines for 5,500 LF of four-lane divided arterial roadway. The project included a concrete pedestrian underpass.

Chambers Road
Grading, paving, curb and gutter, raised median, storm sewer, water transmission line, and sanitary sewer for 4,000 LF of four-lane divided arterial roadway. Project included a connection to the E-470 freeway.

Stonegate Parkway
Grading, paving, curb and gutter, storm sewer, water lines, and sanitary sewer lines for 2,200 LF of collector roadway.

Client: City and County of Broomfield, Colorado
Description: This project consisted of widening Lowell Boulevard between 125th and 128th to the standard connector section. In addition, the work included a geotechnical assessment and pavement design report and a Drainage Study. RGA performed final design, prepared plans, specifications and bid documents for this project.

Client: City of Black Hawk, Colorado
Description: RGA re-designed this intersection to accommodate the increased traffic of gambling in the communities. The existing 2 lane highway was widened to add right and left turn lanes, as was Mill Street, which also required a new, wider bridge over North Clear Creek. The intersection was then signalized and is the first major access to the City of Blackhawk. RGA also provided the construction phase services. The project required coordination with the Colorado Department of Transportation, and the US Army Corps of Engineers.

Client: Lowry AFB Redevelopment Authority, Denver, Colorado
Description: The RGA team, as a subcontractor to BRW, Inc., provided the design for the extension of Quebec Street between 1st Avenue and Alameda Avenue through Lowry AFB. Design of this 3,000 LF four-lane parkway included grading, curb and gutter, storm drain system, potable and nonpotable irrigation systems, striping, signing, and three signalized intersections.

Client: Town of Superior, Colorado
Description: This $434,500 project involved the design and construction management of a previously signalized intersection. The traffic signal was removed and replaced with a two-lane roundabout at the intersection of Rock Creek Parkway (four lanes) and 88th Street (two lanes). The project also included major drainage improvements, an extensive retaining wall, patterned asphalt thermoplastic treated crosswalks, street lights, pedestrian lights, and landscaping.  Since the roundabout construction was completed, vehicular incidents have been dramatically reduced.

Location: Douglas County, Colorado
Description: The RGA team provided design and construction management services for the following roadway projects:

Chambers Road
Grading, paving, curb and gutter, raised median, storm sewer, and water line for 1,300 LF of four-lane divided arterial roadway.  Project included signalized intersection.

Jordan Road
Grading, paving, curb and gutter, raised median, storm sewer, and water line for 4,200 LF of major arterial roadway.  Project included design and construction of a five-lane two-span prestressed concrete bridge structure.

Stonegate Parkway
Grading, paving, curb and gutter, storm sewer, and water transmission line for 4,300 LF of collector roadway.  Project included construction of a single-span prestressed concrete bridge.

Keystone Boulevard
Grading, paving, curb and gutter, and storm sewer for 3,500 LF of collector roadway.

Client: City of Dacono, Colorado
Description: RGA performed the design, prepared the plans, specifications and bid documents, conducted the bidding process, and provided the construction administration for this 3-year, 3-phase $9 million project. The project consisted of removing and replacing all of the existing asphalt pavement, most of the sidewalk, curb, and gutters, all of the cross pans, installing new handicap ramps, and new storm drain inlets and pipes in the “Old Town” portion of the City. The project also included replacing all of the water mains and services, installing new meters, and replacing a large portion of the sanitary sewer system. 

Client: Town of Superior, Colorado
Description: RGA provided the Program Management for this project on a major highway between Denver and Boulder, Colorado. RGA acted as the Town of Superior's technical representative by coordinating the planning, design and construction management activities with the Town. RGA was responsible for ensuring that the design of the interchange, which included widening of the grade separation bridge, re-signalization and the addition of on and off ramps, all met the needs of the political entities, the schedule and cost; and that the construction did the same. RGA also helped resolve a dispute with the contractor relating to quantities of work that were completed. The design and construction phase services were performed by two different consultants, whose efforts the RGA team coordinated.

Client: Adams County, Colorado
Description: RGA designed an expanded roadway section for this $3,100,000 project that included storm sewers water, and sanitary sewer improvements to West 64th Avenue. RGA coordinated and conducted public informational meetings where feedback from local residents and business owners was integrated into the design process. The review agencies having jurisdiction in this area were UDFCD, CDOT, Crestview Water and Sanitation District and Denver Water.  RGA met with, submitted plans to and obtained approval from all these agencies.