Search term: (11bridges) (10/05/2007-10/09/2007): 2 matching blog entries
More on the 11th Street Bridges Changes
Oct 8, 2007 12:34 PM
With no "real" news outlets yet uttering a peep about the
Final Environmental Impact Statement for the 11th Street Bridges, I've had to continue to do my own analysis of what the chosen design alternative will look like.
Friday's bleary-eyed discussion was a decent start, but I've looked at it a bit more closely today and have seen that there really will be a pretty large-scale change in how the Southeast Freeway works with the new plans.
If you look at this
spiffy side-by-side graphic I've tossed together, showing the current freeway ramps and flyovers at 11th Street versus what the EIS depicts, you'll see that the bulk of the SE Freeway's lanes will turn toward the bridges at 11th Street, instead of just two smaller flyovers that currently exist. This is because the many lanes that now run from the freeway under 11th Street and over to Pennsylvania Avenue at Barney Circle will be taken out of the SE Freeway flow altogether. Instead, drivers on the SE Freeeway wishing to get to Barney Circle (and vice versa) will access the freeway and the new "Southeast Freeway Boulevard" (kind of a "Virginia Avenue Extended") via ramps at 11th Street, which appear to be able to be carved out of the existing smaller flyovers west of 11th. (And so the two flyovers coming from east of 11th to the sunken Pennsylvania Avenue access could be demolished altogether.) This means that the area north of M along 11th Street will be much more of a street grid rather than a series of flyovers and tunnels. Eventually.
And, for Navy Yard workers who use the 11th Street Bridges, note that you would no longer get to take that little turn onto N Street as you come off the bridge; you would arrive at M Street, turn right, turn right again on a newly two-way 12th Street, and then turn right at N. For other people, you'd be able to either turn left at M once you exit the upstream span of the bridge, or continue north on a new street and access the new Southeast Freeway Boulevard to continue either to Pennsylvania Avenue or 11th Street closer to I.
More posts:
11th Street Bridges
Design for 11th Street Bridges Reconfiguration Chosen
Oct 5, 2007 6:10 PM
Here's some late Friday news for you:
the 11th Street Bridges Environmental Impact Statement has been completed, and a preferred plan for the reconfiguration of the bridges has been chosen, at an estimated price of $465 million, taking an estimated five years to complete. No start date has been announced.
You can
read the summary, check out the
Preferred Alternative and the other alternatives,
plow through the entire thing at once (36 MB), or
pick and choose the sections you want to read. When even the summary is 24 pages long, it's hard to give a quick description of what is being recommended, but here's my best shot:
* There will be two new bridges built on exactly the alignments of the existing two bridges, allowing the use of the existing piers but requiring their widening to allow for wider bridges.
Two new ramps will be built on the east side of the Anacostia River, providing access at last to the northbound Anacostia Freeway from the Southeast/Southwest Freeway and to the freeway from the southbound Anacostia Freeway. One of the two bridges would be dedicated to freeway traffic, and the other to local traffic, with the
total number of **freeway*** lanes unchanged, but with four new local lanes and with added paths for bicyclists and pedestrians, as well as "accommodations for transit," such as the proposed light rail system.
As for what would happen to the interchange with the bridge in Near Southeast, it's hard to digest, but this is what I'm seeing by looking at the diagrams in the
Alternatives section (here's a Google Maps
satellite view of the current bridges, which you might need):
*
The current on/off ramps at N Street would be moved to M Street (see
page 15), with local traffic and paths to and from Anacostia being routed on the western of the two bridge spans (officially known as the Officer Welsh Bridge), and traffic bound for the Anacostia Freeway routed onto the 8-lane eastern span. This also means that the local traffic coming north from Anacostia would be routed along a newly two-way portion of 11th Street up to M.
*
The exit ramp now between Ninth and 10th streets would be moved to Ninth Street.
* There would also be a new entrance to the westbound freeway from 11th Street (perhaps taking some of the pressure off the Third Street ramp?).
(In a separate project, the existing Southeast/Southwest freeway between 11th Street and Barney Circle is apparently going to be downgraded to a
new Southeast Freeway Boulevard, which would be accessed by exiting the freeway and going across 11th Street at-grade. As part of this, the sneaky little route to Pennsylvania Avenue from 9th Street and Virginia Avenue would be removed, too.)
As for the impact of the reconfigured bridges on
the boathouses nestled between them on the west side of the river, the EIS says that "it has been determined that construction of any of the build alternatives, including the Preferred Alternative,
will not require the whole or partial demolition of either of the two ACBA buildings."
Boathouse operations would have to be relocated during construction, but the documents state that DDOT is committed to maintaining the operations during this time, having agreed to provide temporary structures on a Washington Gas-owned space a few hundred yards to the north. (See
Section 7.3 for more about the boathouse impact.)
Finally, the
document states that the bridges project will not impact the Virginia Avenue Park at 9th and Virginia.
I doubt anyone is still reading at this point, so I'm going to quit while behind and hope that all sorts of media outlets give some real coverage, and take me off the hook. If you're at all interested in this, especially in the impacts east of the river that I haven't addressed, I suggest
browsing the entire document. You'd be amazed how much detail is in there.
There's
now a public comments period, through November 20. See the
EIS web site for more about the entire study process.
If you're not real familiar with this area of Near Southeast, visit my
East M Street page for photos and links.
UPDATE, 10/11: I erred in this above item when stating that the total number of lanes would be unchanged from the current configuration; having misread the EIS wording that referred to the number of freeway lanes being unchanged. The two spans currently have eight freeway lanes, which will be the case with the new bridge; but those eight lanes will be carried on a widened version of the upstream span, and the downstream span will carry four local lanes.