Posts about Woonerf

Along I Street, the intersections at 9th, 8th, and 7th streets could become green, permeable ones. What is now a source of huge amounts of runoff in the center of the streets could become a central place for absorbing rainwater into the underlying soils. Additional layers of stone or sand underground could also help boost absorption rates.

Crisscrossing an east-west system of green streets along Eye street would be a new north-south green "festival street" running down 8th Street, transforming an underused, garage-heavy street into an active, pedestrian-friendly zone.

Designed to be like a Dutch woonerf or pedestrian mall, this "B or C street," which means it doesn't get that much car traffic, could be designed to slow down car traffic so that pedestrians could move more freely between the National Portrait Gallery and the commercial complex at K Street.

Throughout this new green boulevard, which could be a pedestrian "arboretum," different materials would designate different realms—those for people or for cars. There would be no curbs, creating a flat plane for pedestrians. For 8th and other streets, redesigning the street so it can evolve may be the way to go. Kent Schwendy, senior vice president at Fuss & O'Neill, said many engineers want to simply lock streets into one use, but he argued that "streets change and their uses evolve. We have to let that change happen."

Where 8th Street meets I, new open grates would feature prominently so that "people could actually see that water moves through this area, even when it doesn't rain. This will help educate people about stormwater," said ASLA President Tom Tavella. But the street-level stormwater management systems proposed for I Street wouldn't be "lipstick on a pig," said Chris Ferrero, who runs urban planning and landscape architecture at Fuss & O'Neill but represent an "integrated series of events, a system."

Some 6 additional feet would be added onto the sidewalks, giving 2-3 feet for "green gutters along the curbs" and another 2-3 feet for a step area to get to bridges that would take people across the new gutters. Intermixed among the new green gutters would be rain gardens, which all inter-connect with the existing tree pits and proposed permeable pavement systems.

On 9th Street, creating a new "two-way cycle track," a dual-direction bicycle lane, actually creates an opportunity to create yet more green infrastructure. The bicycle lanes would be protected by a 4-foot "physical separation filled with plants, not just paint and bollards," said Tavella. That physical separator would not only protect bicyclists from car traffic but also help create a sense of place and add greenery.

The street may certainly need it: Wade Walker, Jr, head of transportation planning at Fuss & O'Neill, said the bicyclists he saw on that street were "up on the sidewalks, showing that they didn't feel safe being there."

Lastly, right in front of ASLA, there could be a new parklet, taking up 2 parking spaces, which would be designed to give people a place to sit and view the green roof education video and read signs about the new green features of the neighborhood. Throughout the district, "signage would show what a green street is about, what porous pavements do," said Tavella.

According to Nancy Somerville, Hon. ASLA, CEO/Executive Vice President, ASLA, the next steps will include pitching Fuss & O'Neill's concepts to stakeholders in the neighborhood, starting the fundraising process, and further refining the plans to meet the approval of the many DC government departments involved. Hiring landscape architects to turn the concepts into real designs also sounds like a next step, given the positive early feedback from the DC planning office.

At the end of the intensive, two-day design charrette, Chris Shaheen, who manages the public space programs with the DC planning office, said "we've tested many of these ideas here and there, but this brings it all together. This is what the city wants to do." The city knows, just like ASLA does, that really ambitious proposals like this are needed if the city will reach its goals of making 1.5 million square feet of public right of way permeable by 2016.

A version of this article was originally posted on The Dirt.

The two most prominent security woonerven in DC are on the east side of the US Capitol and on Pennsylvania Avenue in front of the White House. In these areas, activity takes place mainly on foot or on a bike.

Although security vehicles operate in those areas, they're parked most of the time, so pedestrians and cyclists essentially have the run these spaces. These two locations are obviously popular with residents and visitors alike. Both are now important hubs in DC's expanding bicycle network and as important activity centers for all manner of activity: tourism, lunch breaks, leisurely strolls, running, you name it.

Following the tragedy at Oklahoma City in 1995, federal planners redesigned facilities to minimize risks to important buildings from motor vehicles. All across the city, barriers went up, starting with jersey barriers, giant planters, and police roadblocks.

Over time, these evolved into permanent hardened perimeters with bollards, sally ports, guard gates, and delta barriers. As much as possible, these elements were planned with an eye toward improving aesthetics, or at least in comparison to original concrete jersey barriers.

While the two security woonerven at the White House and the Capitol are great assets to the city, other cordoned-off areas are not.

The security professionals who planned these facilities gave little consideration to bicycle and pedestrian access. The spaces are attractive for walkers and bikers by default, because of their lack of traffic. However, it often isn't easy to travel into or through the perimeter of these areas.

Another security woonerf is in the works for E Street, south of the White House. As many commenters noted during the design competition, though, cyclists appeared to be an afterthought in most of the submitted proposals.

Often, small tweaks could really improve access into these potentially great spaces. Even Lafayette Square has access issues on the north side at the Madison Place sally-port.

The State Department closed C Street NW and segments of other roads next to their Foggy Bottom headquarters, but they have not replaced the jersey barriers and planters with bollards and other elements more hospitable to bicycle and pedestrian traffic. The House and Senate office buildings have several cordoned streets around them that only admit authorized cars, but the access points are difficult to get through by bike.

Although Union Station has closed off driving access through Columbus Circle for security, the space was subsequently devoted to passenger pick-up and drop-off, making this potential security woonerf very difficult for pedestrians and cyclists. Thankfully, work already underway on the Circle will improve upon current conditions.

Beyond these spaces, there are a number of closed campuses in DC which would greatly benefit from adopting some of the more successful security woonerven designs. Specifically, I'd love to see security woonerven at the Old Soldier's Home, the future Walter Reed development (both the DC and State Department portions), and the Washington Hospital Center.

Areas around the Pentagon, and Joint Base Bolling also have potential if security priorities are better balanced with pedestrian and bike permeability. Universities like Catholic, Georgetown, and Howard you can get through, but it's not obvious or direct. Even at the Arboretum and the Navy Yard, where trails and woonerven already exist, extended hours would vastly improve these spaces.

Regardless of why and how we established these areas, federal and local planners need to recognize their success, and understand their best elements. Then they can adopt those elements into sites that have potential, but aren't quite security woonerven yet.

Are there other places we could have a great security woonerf? Also, can you think of a better term? Whatever you you call them, if streets have to close for security, we would all benefit from making more of them living streets.