Weekend Road and Rail: Full closure at Outer Loop, Suitland Parkway to close; Metro work brings single tracking

Here’s what you need to know if you’re traveling in the DC region this weekend.

We have rain in the forecast with complete closures planned on the outer loop of the Virginia Beltway, Suitland Parkway and ramps from the Beltway to the Clara Barton Parkway. Metro continues its closure with Saturday maintenance bringing simple tracking.

Here’s what you need to know if you’re traveling in the DC region this weekend.

Road work


Unstable weather was in our weather forecast for the weekend, so be sure to keep an eye out for WTOP traffic on the 8s for any sudden changes. There are plans to close the outer loop of I-495 at I-66 during the night, starting Friday and through Sunday.

For this weekend, weather permitting, the Virginia Department of Transportation (VDOT) said there are plans for bridge girder installations at I-66 / I-495 Interchange. This would require a complete closure and detour of I-495 south of I-66. Traffic would be diverted around the closure using I-66 West and Nutley Street.

The 495 Express Lanes South would also be closed along with the ramps from I-66 West to I-495 South, the outer loop and several other 495 Express Lane ramps.

These closures are necessary for crews to install beams for the new flyover ramp from I-495 North to I-66 West as part of the Transform 66 Outside the Beltway Project. The schedule for closure and detour is as follows:

8-10. October:

  • I-495 South approaching I-66:
    • Two courses will be closed on Friday from 22 to kl. Saturday, from 10pm to 7am; and Sunday, from 9pm to 5.30pm
    • All lanes on I-495 South (Outer Loop) will be closed Friday and Saturday nights from midnight to 5 am and Sunday nights from 11:30 pm to 4:30 pm
    • Traffic will be diverted to I-66 West, exit at Nutley Street South, turn right onto the new loop ramp to I-66 East, then follow signs for I-495 South.
Click to enlarge: Detour I-495 Outer Loop ramp to I-66 West to Nutley St. (Regards VDOT)
  • Ramp from I-66 West to I-495 South:
    • The ramp closed Friday and Saturday from kl. 22 to kl. 5 and Sunday from kl. 23.30 to 4.30
    • Traffic is directed to continue further west to Nutley Street for a U-turn.
  • 495 Express Lanes South approaches I-66
  • Ramp from I-66 East to 495 Express Lanes South
  • Ramp from 495 Express Lanes south to I-66 West
  • Ramp from I-66 West to 495 Express Lanes South:
    • The freeways and ramps will be closed from 22:00 to 05:00 every night.
    • Overhead variable message boards direct traffic to alternative routes.

All work is weather dependent and will be rescheduled if bad conditions arise.

In other work scheduled for this weekend as part of the Transform 66 project, various tracks and ramps will be included between Beltway and Gainesville. Here are a few on the list to look for:

  • I-66 both ways between US-29 Gainesville and US-29 Centerville.
    • Friday: eastbound 10 to 16:30 / westbound 8 to 14:30
    • One lane will be closed for lighting and supply work.
  • I-66 west from Groveton Road to Route 234 Bypass (Prince William Parkway).
    • Friday and Saturday: 06:00 to 14:30
    • The left lane is closed for pavement.

These are just a few of the work areas that are planned. Be sure to keep an eye on WTOP traffic on the 8s for updates or additional closures.

To be part of the process, call the 24-hour WTOP Traffic Center at 866-304-WTOP.


The Maryland Department of Transportation State Highway Administration (MDOT SHA) has a planned project this weekend to improve visibility along I-495 (Capital Beltway) in Montgomery County.

The department will improve visibility by trimming trees and other vegetation on the Inner Loop ramp from I-495 to Exit 41 (Clara Barton Parkway). MDOT SHA expects the trimming to take place between 9 and 14 Saturday and Sunday.

For the sake of the workforce and the traveling public, the work requires a full ramp closure with motorists being overtaken to use exit 39 of MD 190 River Road and southbound I-495 to access Clara Barton Parkway. Be sure to allow extra time for travel.

In Howard County, MDOT SHA is carrying out conservation work on the Watersville Road bridge over I-70. The bridge, located between the MD 94 (Woodbine Road) exit and the MD 27 (Ridge Road) exit, is being painted to protect the structure from corrosion.

In the work that started this week, the crews work overnight Sunday through Thursday from 9pm to 5pm the following day. Because this project requires scaffolding, the height limit for vehicles driving under the Watersville Road Bridge has been temporarily reduced to 14 ‘6 ″ during work.

In Newburg, US-301 heading south toward the approach to Governor Harry W. Nice Memorial / Senator Thomas “Mac” Middleton Bridge has a new travel pattern that will remain in place through the fall to implement the new cashless payment portal and signage. More details can be found online.

In Prince George’s County, MD 5 Branch Avenue from District Line to Curtis Drive, there is continued off-peak pavement with lane closures, which continue through weekends from 5 a.m. to 10 p.m., with intermittent singles to multiple lanes closed.

There will continue to be off-peak work on the Maryland side of the Beltway in Prince George’s and Montgomery Counties. Between Arena Drive and Richie Marlboro Road through the fall and on both sides of the Beltway near Suitland Parkway, motorists can expect lane falls and ongoing traffic barrels.

Milling and paving on the Beltway before and after Georgia Avenue is also an ongoing work in low times. Motorists can expect rough and uneven pavement to reduce speeds through the roadway in both directions.

Purple Line work saw a new closure this week of the westbound right-hand lane on Annapolis Road (MD 450) between 76th Avenue and the Glenridge Shopping Center entrance for utility relocations. This work will take place between kl. 7 and 17 for about a week, weather permitting.

Be sure to check out the posted link for any changes and terminations that may take place with this ever-changing, everlasting project.


On Saturday, from 4 to 12, the Run for the Badge 5K will take place between Judiciary Square and the Federal Center, SW. There will be various street barriers and parking restrictions associated with this event.

There is also a Snallygaster beer party, which closes parts of Pennsylvania and Constitution Avenue between 3rd and 7th streets, NW and all north / south intersections along the mall from Madison Drive through Pennsylvania Avenue between 3rd and 7th streets. These street barriers will be in place from kl. 20:00 on Friday until 02:00 on Sunday.

Work is scheduled through this weekend as part of the I-295 / DC-295 Corridor Project. The District Department of Transportation (DDOT) says various lanes, ramps and even roads have closures planned if the weather permits. There are daily lane closures planned along I-295 between Laboratory Road and I-695, South Capitol Street, and complete night closures of Howard Road. The full list and schedule can be found online.

Click to enlarge: Map of Suitland Parkway detour during Saturday’s closing. (Regards DDOT)

Saturday, between 6 and 21, DDOT plans to close and detour the Suitland Parkway between Firth Sterling Avenue and South Capitol Street. This closure will include ramps to and from I-295. Detours will be announced.

Work is continuing this week on I-295 south between South Capitol Street and Malcolm X Avenue / JBAB with a right-hand lane closed between 6 p.m. 7 and 14 This closure is expected to continue through Monday, weather permitting.

This is part of the ongoing corridor project, and more information can be found online.

This week, there have also been charging closures associated with bridge and tunnel inspections. DDOT will continue its ongoing bridge and tunnel inspection project through October 14 in the off-peak hours.


The Red Line closure continues between Twinbrook and Shady Grove for the Rockville Canopy replacement project. This project continues to close the Rockville and Shady Grove stations through December 4th. There is a list of alternative travel options that can be found online.

Click to enlarge: Photo of free shuttle bus services for subway users stopping between Twinbrook and Shady Grove subway stations. (Regards WMATA)

Switch maintenance for the blue, orange and silver lines is planned for the weekend, which will require single tracking between Foggy Bottom and Clarendon / Arlington Cemetery on Saturday.

Metro runs from 7.00 – 01.00 Saturday and 7.00 – midnight on Sundays and serves 89 of 91 stations with normal weekend frequencies on the red, yellow and green lines.

In keeping with Columbus Day, Monday, Oct. 11, Metrorail opens at 7 p.m. 5 in the morning and closes at midnight. The trains run on a Saturday schedule with service adjustments on the blue line after 9pm

Weekend summary of service:

  • Red line: Shady Grove and Rockville stations closed.
    • Buses replace trains with free transportation between Shady Grove, Rockville and Twinbrook.
    • Trains only run between Twinbrook and Glenmont.
  • Blue line: Saturday only, single track between Foggy Bottom and Arlington Cemetery.
    • Monday, after 9pm single track between Braddock Rd and Van Dorn St.
  • Orange line: Saturday only, single tracking between Foggy Bottom and Clarendon.
  • Silver Line: Saturday only trains run only between Wiehle-Reston East and Ballston.
  • Yellow and green lines: normal service.

Leave a Comment