A press release just out from DDOT (not yet posted online) alerts the city that construction is about to start on the new 11th Street Bridges
"On or about Tuesday, December 29, 2009, contractors will begin 11th Street Bridge Project construction activities, which may be noticeable to area residents and businesses but ultimately result in a number of important benefits.
"Initial work will include pile driving in the Anacostia River to construct foundations for three new bridges - one for local and two for freeway traffic. Barrier placement, off-roadway clearing, and drainage work is also to begin adjacent to both directions of DC 295, later resulting in shoulder encroachments and minor lane shifts. Eventually, land-side pile driving on both sides of the river will be required to construct new connecting ramps and improve the highway. To minimize impacts, noise and vibration levels will be monitored at all times.
"The new bridges will be constructed between the existing bridges, which are projected to serve almost 180,000 vehicles per day by 2030, allowing contractors to maintain all existing travel movements and 12-foot travel lanes except during approved work in off-peak travel hours.
"In addition, contractors will practice good neighbor construction by establishing designated haul routes, having most materials delivered via the river or highway, controlling dust, and requiring that workers not park on neighborhood streets."
The project is scheduled for completion in mid-2013, and at last report would be costing $260 million (unless they've found more funding). In addition to more lanes for cars and improved vehicle flow, the bridges will have new wider paths for pedestrians and bicycles, as well as the rails for the new streetcars that will connect Anacostia and the west side of the river.
DDOT is having a press shindig on Tuesday to give more specifics about the project; you can see my 11th Street Bridges project page
for additional information and graphics, and there's also this PDF from DDOT
that gives an overview of what the new bridges and traffic flow will look like.
* The bridges (three, rather than two) will be placed in between the existing bridges on new foundation/substructures, as mentioned above;
* Minor reconfigurations of the expressway interchanges on both sides of the river;
* Reconfiguration of the local access interchange on the east side of the river;
* Ending work on the Southeast Freeway east of the existing Seventh/Eighth Street bridges, without replacing these structures;
* Modifications to the pedestrian and bicycle connections.
has plenty more details on the above bullet points if you're interested. It also explains that, for now, DDOT is only funding the "Phase 1 interim improvements," which "will include complete construction of the three new river crossings and completion of the interchange on the east side (Anacostia) of the river. On the west side of the river, the inbound movement will be completed from the river to the proposed connection to the Southeast Freeway at the existing bridge over 8th Street. Ramp[s] will also be constructed and the inbound Southeast Boulevard [the old below-grade connector to Pennsylvania Avenue] will be connected to 11th Street. 11th Street will be widened from the Southeast Freeway to O Street on the west side of the river, with widening to the ultimate width from M Street to O Street.
" It also says that, as additional funding is found, the "remaining elements of the project can move forward in the same design that was approved in the EIS."