Transportation / Environment / Burlington, CT

Vineyard Road Bridge Reconstruction

Client: Town of Burlington
Vineyard Road Bridge Masthead Mobile

Providing services from design through construction

Our role

Milone & MacBroom was retained by the Town of Burlington for the design of a bridge replacement at Vineyard Road over Burlington Brook. The design conforms to CTDOT and federal standards.

Services provided include:

Structural engineering
Hydrologic, hydraulic & scour analysis
Permitting
Public informational meetings
Geotechnical service coordination
Survey
Wetland delineation
Roadway engineering
Utility coordination
Construction administration & inspection

Existing conditions

The existing bridge, constructed in 1954, was a single 52-foot span with a superstructure consisting of steel stringers with a cast-in-place concrete deck. The bridge width was 22 feet curb-to-curb with concrete curb and steel posts with cable guide rail along each fascia. The bridge superstructure was supported on concrete abutments. Upstream of the bridge, the bank on the outside of a bend in the channel had become seriously undermined threatening the stability of the bank and potentially resulting in the loss of several trees.

The challenge

The sufficiency rating for the bridge had fallen below 50% due to the poor condition of the steel superstructure. The existing steel beams were severely corroded due to water intrusion through the deck.

The solution

A bridge-type study was completed, taking into consideration environmental impacts, construction costs and durations, and future maintenance costs. The study showed that a full bridge replacement using a prestressed concrete box beam superstructure supported by reinforced concrete abutments founded on bedrock was the most cost-effective solution. Streambank stabilization upstream of the bridge was also included to prevent further erosion of the bank.

The final product

The final design of the new bridge structure was completed in the summer of 2015. During construction, which began in the spring of 2017, the road was closed due to low traffic volumes and the availability of a short detour. The design team worked hand-in-hand with the inspection team to redesign the bridge railings "on the fly" based on changing technical requirements. The construction was completed in the fall of 2017.