The weather will warm up a bit before cooling off again for the weekend, but there’s a chance of rain Tuesday through Friday, the Capital Weather Gang advises travelers.

The Nationals are out of town till Friday, when they begin their last homestand of 2011, but D.C. United has a game at RFK Stadium at 7:30 p.m.Wednesday.

Road work continues on all our major projects. Here are some highlights, and a look at some upcoming changes and new lane closings.

N.Y. Avenue lane closings

The District Department of Transportation has scheduled overnight repairs on New York Avenue NE that will close lanes. Workers will be repairing traffic detection sensors in the roadway tonight through Thursday night between 10 p.m. and 5:30 a.m.

During the first two nights, DDOT said, outbound New York Avenue will have the left and center lanes closed followed by the center and right lanes, just beyond South Dakota Avenue.

During the second two nights, inbound New York Avenue will have the left and center lanes closed followed by the center and right lanes.

Should there be any delays, the remaining work would be finished during the daytime on Friday.

GW Parkway lane closings

Federal highway workers are about to begin fixing landslide damage on the George Washington Parkway. Watch for upcoming closings of the right lane on the northbound parkway between Spout Run and the first overlook from 10 a.m. to 2:30 p.m. weekdays.

Rock Creek Parkway

Resurfacing work is scheduled in the Rock Creek Parkway’s southbound lanes between Beach Drive and Waterside Drive through Friday, and this will result in lane closings.

Constitution Avenue NW

From 5:30 a.m. to 7 p.m. today through Friday, expect to find up to two lanes in each direction closed on Constitution Avenue NW between 23rd and 17th streets for milling, road base repair, sidewalk installation and streetlight work.

Each night through Friday from 7 p.m. to 5:30 a.m., expect to find up to three lanes in each direction closed between 23rd and 17th streets for milling, road base repairs, sidewalk removal and paving.

Maryland road work projects

These are some of the lane closings scheduled for Maryland State Highway Administration projects.

Wisconsin Avenue between the D.C. line and Bradley Boulevard: Single lane closings weekdays between 9:30 a.m. and 3:30 p.m., and double lane closings from 8 p.m. to 5 a.m.

University Boulevard between Arcola Avenue and Colesville Road: Single lane closings weekdays from 9 a.m. to 3 p.m.

Georgia Avenue between Norbeck Road and Glenallan Avenue: Single lane closings from 9 a.m. to 3 p.m. Monday through Friday and double lane closings from 7 to 9 p.m. Sunday through Friday nights.

Forestville Road bridge over the Capital Beltway: Northbound Forestville Road traffic will be detoured for the duration of the bridge rehabilitation project. On the Beltway, watch for single lane closings from 9 a.m. to 3 p.m. weekdays, and from 9 p.m. to 5 a.m. Sunday through Thursday.

Car-Free Day

More than 7,300 people have pledged to leave their cars at home or to carpool on Thursday during the annual Car-Free Day sponsored by Commuter Connections, the regional transportation program coordinated by the Metropolitan Washington Council of Governments.

Commuter Connections also is encouraging participants to join in the Capital Bikeshare Birthday Bash from 6 to 9 p.m. Thursday at Yards Park, on the Anacostia River near Nationals Park, where there will be live music, moon bounces, food, games and prizes.

People can take the car-free — or car-lite — pledge at

Metro weekend work

The transit authority has not scheduled major track work — the sort that closes stations — for this coming weekend. The next major disruption is planned for Oct. 8-9. During that time, buses will replace trains between East Falls Church and West Falls Church, and between Mount Vernon Square and Georgia Avenue.

Later today, Metro should announce its plans for other weekend work, the kind that requires trains to share tracks around work zones. We’ll have for you here on the blog.

Clarendon Day on Saturday

Some Arlington County streets will be closed from 5 a.m. to 8 p.m. Saturday for the annual Clarendon Day festival:

Wilson and Clarendon boulevards between Washington Boulevard and North Garfield Street; North Highland and North Hartford streets at Wilson Boulevard, North Herndon Street at Wilson Boulevard, North Hudson Street at Wilson Boulevard and North Highland Street at Washington Boulevard.

New bus in Southwest D.C.

Residents of Southwest D.C. are about to lose the D.C. Circulator bus that operates between the Washington Convention Center and the Southwest Waterfront, mostly along Seventh Street. Instead, they’ll have a new Metrobus, Route 74, which will cover much of the same territory.

The Metrobus will cost more to ride and will operate less frequently than the Circulator, but it’s a better solution than eliminating that bus service.

The District Department of Transportation said that the ridership for that Circulator route was too low. Meanwhile, it wants to start a new line serving neighborhoods east of the Anacostia River.

The Circulator’s popularity is based in part on its distinctive branding in the design of the buses and the timetable that schedules bus arrivals every 10 minutes. Metro has more flexibility in adjusting timetables on routes with lighter or heavier demand.

Buses on the new 74 route will operate every 18 minutes during peak hours and every 24 minutes all other times. The 74 buses start running next Sunday. The Circulator route is scheduled to end Sept. 30.

Pennsylvania Avenue SE

Drivers may want to make plans now for dealing with a traffic restriction on Pennsylvania Avenue SE that is scheduled to start Sept. 26.

The District Department of Transportation plans to temporarily restrict lanes on Pennsylvania Avenue SE between Branch and Southern avenues to complete roadwork on the Pennsylvania Avenue Great Streets project. During this phase, a single lane will be open in each direction on Pennsylvania Avenue.

Traffic between Branch Avenue and 38th Street will be reduced to one lane in each direction starting Sept. 26 and continuing through October. The portion of the project from 38th Street to Southern Avenue will be reduced to one lane in each direction from October through December.

Once the segments are rebuilt, the new lanes will be opened to allow for two lanes of traffic in each direction.

Work will take place between 7 a.m. and 7 p.m. Mondays through Saturdays. Work zones will be expanded as needed, DDOT said. Sidewalks will be kept open, and temporary crosswalks will be set up at intersections.

Traffic delays are likely. DDOT suggested that drivers use alternative routes, which include Suitland Road to Alabama Avenue to Good Hope Road, and Massachusetts Avenue to Minnesota Avenue.

Beltway exit to close

Variable message boards along the Capital Beltway in Virginia are warning drivers about a major change in the traffic pattern coming up around the end of the month along the inner loop.

The left lane exit (49C) to westbound Interstate 66 in Virginia is scheduled to close permanently around the end of September as construction continues on the high-occupancy toll lanes project.

The original date for the closing was this Saturday, but it was pushed back about a week to give the contractor more time to prepare for the traffic shift.

The agency has placed signs to warn drivers about this, but watch for some additional traffic congestion at the I-66 interchange immediately after the closing.

All inner loop drivers heading to westbound I-66 will then use the right-side ramp, exit 49A, which is being widened to accommodate the extra traffic.