Southeast Rail Extension construction update
Caissons for the RidgeGate bridge being constructed.
Information from RTD Southeast Rail Extension
To the average commuter traveling on I-25 past Lincoln Avenue and RidgeGate Parkway, it may appear that besides a lot of dirt being moved (close to 160,000 cubic yards to be exact), not much else is being constructed on the new light rail extension project. However, when looking beyond and under the dirt, the building of foundations for two of the line’s bridges is officially underway. And, when the Southeast Rail Extension project is complete, there will be a total of three new bridges.
One bridge will be constructed over Lincoln Avenue as the rail line heads south to the Sky Ridge Medial Center area. An east-west bridge will span over I-25, from Sky Ridge to the future Lone Tree town square, and the third bridge will be built over RidgeGate Parkway to the end-of-line station located at RidgeGate and Havana Street.
Each of the three bridges under construction on the project will be built with overlapping schedules. While the total construction duration for each bridge overlaps, the majority of the work will take place in late 2016 and 2017. When all three bridges are completed, a great amount of work remains before the project opens for revenue service in spring 2019. 
Construction has begun on the future end-of-line 4-level parking garage structure at RidgeGate Parkway. The garage will have 1,300 parking spaces.
