Dress warmly if you’re going to a Nationals game on the next to last home stand of the season at Nationals Park. The Capital Weather Gang says the next few days are likely to be mostly cloudy and cool with a chance of light rain Sunday.

Keep that in mind as you head for the Virginia Wine Festival on Saturday and Sunday at Bull Run Regional Park, or take the Maryland Lighthouse Challenge driving tour, or enjoy Saturday’s H Street Festival in D.C. or attend the Redskins game at FedEx Field Sunday afternoon.

Here’s a look at some of the road and transit conditions you will encounter in your travels across the D.C. region this weekend and beyond, including a couple of major changes in traffic patterns coming up late in September.

Metro weekend delays

Yellow Line: Work on the Yellow Line Bridge over the Potomac River will send Yellow Line trains on a different route: Huntington to Stadium-Armory stations via the Rosslyn tunnel from 10 p.m. Friday through the train system’s midnight closing Sunday

The Yellow Line trains will leave the terminals about every 20 minutes. The last train from Huntington on Friday, Saturday and Sunday nights will leave 15 minutes earlier than usual. Riders should add 20 minutes to their normal travel times because of the disruption.

Blue Line: From 10 p.m. Friday through closing on Sunday, trains will share a track between Stadium-Armory and Addison Road. Workers will be repairing the slabs underneath the rails.

Throughout the weekend, trains will leave the ends of the line about every 20 minutes. Add 20 minutes to normal travel times because of the disruption.

Orange Line: From 10 p.m. Friday through Sunday’s closing, trains will share a track between Vienna and West Falls Church. Workers will be replacing cross ties and insulators.

Trains will leave the ends of the line about every 20 minutes. Add 20 minutes to your regular travel time.

Red Line: From 10 p.m. Friday through Sunday’s closing, trains will share a track between Shady Grove and Twinbrook. Workers will be repairing rail and conducting other maintenance.

Trains also will share a track between Takoma and Forest Glen while crews work on station platforms. The trains will operate about every 24 minutes between Shady Grove and Glenmont.

Between 9 a.m. and 9 p.m. Saturday and Sunday, additional trains will operate on the interior part of the line, between Grosvenor and Fort Totten. In that zone, trains should arrive about about every 12 minutes.

Riders should add about 20 minutes to their regular travel times.

H Street Festival

D.C. police plan to restrict access to some streets on the north side of Capitol Hill for the H Street Festival on Saturday.

The festival is scheduled for noon to 9 p.m. There will be no parking or vehicle traffic from 7 a.m. to 10 p.m. on H Street NE between Eighth and 14th streets and all connecting intersections except for the intersection at 15th Street NE. The street closings are likely to create traffic congestion and delays in the festival area.

Beltway/Little River Turnpike

From 9:30 p.m. today through 5 a.m. Monday, exit 52B from the Capital Beltway outer loop to Little River Turnpike east and the ramp from Little River Turnpike west to the outer loop will be closed for work on Virginia’s high-occupancy toll lanes project. These are the weekend detours.

Outer loop to Little River Turnpike eastbound: Continue on the outer loop to exit 54B for Braddock Road eastbound, take the loop ramps and follow signs onto I-495 north (the inner loop) back to exit 52B.

Little River Turnpike westbound to the outer loop: Take the inner loop ramp and go north to exit 51 for Gallows Road, turn left at the traffic signal over the Beltway and follow signs onto I-495 south (the outer loop).

Fillmore open in Silver Spring

The Fillmore concert hall on Colesville Road (Route 29) in downtown Silver Spring opened Thursday, and there was plenty of slow traffic for the evening show around the Colesville Road/Georgia Avenue intersection.

Weekend concert-goers will find ample parking near the Fillmore. The garages operated by Montgomery County are free on evenings, weekends and county holidays. See a map of Montgomery County’s parking facilities in Silver Spring.

These are a few of the garages within easy walking distance:

The Wayne Avenue Garage near the corner of Georgia Avenue and Wayne Avenue, the Town Square Garage on the northeast corner of Ellsworth Drive and Fenton Street and the Spring-Cameron Garage, with entrances on Cameron and Spring streets.

The Silver Spring Metro station on the Red Line is just a couple of blocks southwest of the Fillmore.

Maryland bridge inspections

The Maryland State Highway Administration has scheduled some of its routine inspections of highway bridges for this weekend.

Saturday: Germantown Road over I-270 in Montgomery County will be inspected. Watch for double lane closings on the right side of northbound I-270 from 5 to 10 a.m.

Sunday: The ramp at the I-270 spur in Montgomery County will be inspected. Watch for double lane closings on the left side, then a single lane closing on the right side of I-270 northbound from 4:30 to 11:30 a.m. Route 198 over I-95 in Prince George’s County also will be inspected, requiring the alternating closing of two left and two right lanes on I-95 southbound from 5 a.m. to noon.

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 nights.

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 in 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 www.carfreemetrodc.com.

Pennsylvania Avenue SE

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 from Sept. 26 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

The Capital Beltway inner loop’s 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 Virginia Department of Transportation said today that the original date for the closing, Sept. 24, was pushed back about a week to give the contractor more time to prepare for the 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.

As with most changes in traffic patterns, it will take drivers at least a few weeks to get used to the alteration, despite the use of highway signs as reminders. Drivers who forget about the closing won’t have time or space to move across the inner loop to reach the right-side exit.