* The Navy Yard alerts folks that the 11th & O gate to their part of the Riverwalk will be closed for approximately three weeks because of demolition work on the old outbound 11th Street Bridge. (This means that the Navy Yard Riverwalk itself isn't closed, it just means you can only access it west of 11th Street.)

* Speaking of the old bridge, City Paper writes that this demolition doesn't mean the end of the "recreation bridge across the Anacostia" idea, just that it was determined that it would be better to take off the old bridge deck than to try to maintain it while working on the recreation bridge idea, which will still need financial backing even after the design competition is held this fall.

* Speaking of the river, DDOT has launched AnacostiaWaterfront.org as a new online home for information on projects along the river, such as the 11th Street Bridges, the planned new South Capitol Street Bridge and associated corridor upgrades, the Riverwalk, and other projects.

* One tidbit unearthed in the new web site: An environmental assessment is expected to start this fall on reconstructing Barney Circle and transforming the "easternmost dead-end section of the Southeast/Southwest Freeway into a boulevard between the circle and 11th Street, SE."

(As always, follow JDLand on Twitter or Facebook if you want quicker access to these types of tidbits, most of which I sent out over the past week or so.)

This is the stage of the Environmental Impact study where the initial lineup of possible concepts have been winnowed down to the four that will be evaluated for the final EIS:

* Concept 1 - "No Build" (i.e., leave as is);

* Concept 2 - Rebuild tunnel with a temporary track running in an open trench to the south of the existing tunnel;

* Concept 5 - "Permanent Twin Tunnels," with a new tunnel built via open trench to the south of the existing tunnel, which would be rebuilt as well;

* Concept 6 - "Rebuild Online," where the current tunnel would be rebuilt via open trench along the existing alignment, and trains would run in that same trench during construction.

Also contained in the slides is information about how traffic would be routed with the closure of Virginia Avenue on the south side of the freeway between 2nd and 11th. As has always been stated, north/south traffic on the numbered streets would be maintained across Virginia, and temporary driveways/access are shown on 3rd and 4th Street for Capitol Quarter and the 200 I/225 Virginia loading dock. It's also shown that Virginia Avenue north of the freeway would become two-way between 6th and 8th streets, so that traffic exiting the Southeast Freeway at 6th would all be directed left under the freeway and then would be able to continue to 8th Street on Virginia.

There's also some slides on the vibration and noise analyses being done, and how Virginia Avenue might be improved after construction is completed (with bike lanes being a possibility, which immediately warmed David Garber's heart).

The draft Environmental Impact Statement is expected to be released this fall, in which the design for construction will be identified; the entire process would be completed in spring, 2013. Comments can be submitted to contact@virginiaavenuetunnel.com or via the web site.

To allow you to properly plan your calendar for the week, I'm posting this nice and early:

* Canal Park: Chris Vanarsdale of the Canal Park Development Association gave an update on construction, the bottom line of which has not changed from what's been mentioned the past few months, that because of unexpected issues, the park's opening has been delayed until November. Unmapped utilities that required a redesign of the stormwater management system have been a big stumbling block, but Vanarsdale also mentioned the soil-related difficulties when building on the site of an old canal. Construction is now 60 percent complete, and the work on the pavilion is almost done. Here are the presentation slides, and you can also check out the official web site for more details (along with my project page). Oh, and they're thinking about offering Zamboni driving lessons!

* Community Center: The DC Housing Authority has filed a request with the Zoning Commission for an extension for construction of the planned Capper Community Center, which already received one extension back in 2010 that 6D supported. DCHA has apparently requested that the Zoning Commission act within 30 days on the request, news of which the ANC received on Monday. So the commissioners voted unanimously to send a letter urging postponement of the zoning case so that the ANC can address the request and form a response with a vote at next month's meeting. Commissioners Litsky and McBee also both commented that the project shouldn't be getting another extension.

UPDATE: Here is the letter sent on behalf of DCHA to the Zoning Commission asking for the extension: it would be for two years, requiring building permits by July 1, 2014 and construction underway by July 1, 2015.

* CSX/Virginia Avenue Tunnel: The commissioners voted 6-0-1 to send this letter to the appropriate parties laying out the ANC's opinion on the plans to reconfigure the Virginia Avenue Tunnel. After listing the various ways that the proposed construction "would put people, homes, businesses, and fragile historic resources at risk," the letter states: "[W]e strongly believe that the best options for our community are for CSX to either leave the Virginia Avenue Tunnel in its current state (Concept 1) -- with the suggestion that if this option were chosen that the tunnel would be fully maintained for the safety of both the trains below and the communities above, or to reroute additional train traffic outside the District of Columbia [...] instead of in an expanded Virginia Avenue Tunnel." But, if the construction does occur, "it is absolutely imperative that the health and safety of our many residents, the economic and physical well-being of our businesses, parks, religious institutions, homes, and historic buildings, and the north-south access for all existing modes of transportation be preserved and enhanced." A number of Capitol Quarter residents in attendance also spoke in support of the ANC's support. The next public meeting on the plans for the tunnel will be May 21 at 6:30 pm at Nats Park.

One more recap post to go, probably tomorrow.