Adams Street Design & Reconstruction
The City of Laramie (City) identified this project as one of its Special Purpose Tax (SPT) projects in order to address drainage concerns; provide curb, gutter and sidewalk; and reconstruct Adams Street to satisfy City design standards and traffic calming measures. Trihydro’s scope of services included supplemental topographic and planimetric surveys for mapping preparation and design to reconstruct approximately 0.70 miles of urban street. Elements of the design included surveys, hydrologic and hydraulic design, widening of the roadway section, and design of a pedestrian path.
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Shortly after the project was underway, it became apparent that additional professional services were required. First, the sanitary sewer collector line in Adams Street had been identified in a previous study to have adverse slopes, which affected the capacity of the line. Second, although Adams Street had been maintained by the City for years, it was actually a county road and the right-of-way was not well-established. Lastly, Adams Street was a primary route used by Wyoming Technical Institute students, local residents, and Laramie River Business Park business’ employees, which resulted in high traffic volumes often at high speeds during peak hours.
Trihydro was able to provide these additional professional services with our in-house survey and transportation and infrastructure teams. Trihydro provided design, permitting, construction administration, monitoring and reporting for the removal and replacement of 4,500 linear feet of 15-inch sanitary sewer line. The project included working at depths of 10 to 15 feet below grade, bypass pumping, and dewatering significant groundwater. This project was prepared as a separate bid package and was successfully constructed a year ahead of the Adams Street reconstruction.
Trihydro’s professional licensed surveyors prepared a right-of-way retracement of the original county right-of-way for Adam’s Street within the project corridor. This required surveying, courthouse research, and review of County archives. After the right-of-way was retraced, a plat and legal description for recordation at the Albany County Courthouse was provided and filed. This allowed the County to properly quit claim the right-of-way to the City for ongoing maintenance purposes.
Trihydro’s engineers performed a traffic calming study to address the peak hour traffic volumes and high speeds on Adams Street. This required meetings with the City, Wyoming Department of Transportation, and local stakeholders. Several alternatives were evaluated with associated construction cost estimates and presented to the City Council for direction. The end result included design of landscaped medians to calm traffic and to provide pleasing aesthetics to the street.
Trihydro provided construction administration, monitoring, and reporting to help achieve a successful completion of the Adams Street reconstruction, which was completed on time and within budget. This project was a success not only in addressing the drainage and traffic concerns, but also to the West Laramie community. Adams Street now serves as a gateway to West Laramie, which has prompted additional landscape improvements at the intersection of Adams Street and Snowy Range Road. The pedestrian path also provides connectivity to West Laramie and non-vehicular traffic.