Matrix designed the original 906-foot-long, two-lane, seven-span Central Park Boulevard Bridge in 2011. Phase 2 saw the widening of the new bridge to four lanes with the option to expand to six lanes, if necessary, in the future. Matrix was retained to design an additional 34-foot-wide bridge deck capable of supporting two more lanes and a 13-foot-wide sidewalk.

The work included designing additional intermediate piers to accommodate the wider bridge deck. The bridge spans Smith Road, the Regional Transportation District (RTD) A-Line Commuter Rail, Union Pacific Railroad (UPRR) tracks, Sand Creek, and the Sand Creek Regional Trail. Due to the roadway alignment and the intersecting features below the bridge, the bridge superstructure was designed with variable spaced girders and variable angled piers. Because the bridge decks needed to provide continuous traffic flow even while connecting, the Matrix Team recommended a closure pour that allowed traffic to move in both directions as the sections were structurally joined.

Matrix coordinated with RTD and UPRR to negotiate scheduled railroad shutdowns during construction and provided construction observation services that included daily inspections in conformance with plans and specifications, daily logs, quantity takeoffs, and pay application review. Our team further supported construction by reviewing submittals and responding to requests for information.