9 A.M. Update:

An accident on the inner loop of the Beltway at Ritchie Marlboro Road is blocking one lane and one of the shoulders.

8:50 A.M. Update:

An accident on southbound U.S. 301 at Croom Road might cause issues there.

An accident on South Capitol and I (Eye) streets SE is going to cause delays around that intersection.

There’s a disabled vehicle in the 2500 block of Q Street NW, but the direction is unknown right now.

8:30 A.M. Update:

A disabled vehicle in the outer loop of the Beltway at New Hampshire Avenue could slow traffic.

An accident at 14th Street and Good Hope Road SE, reportedly involving a Metrobus, could cause delays there, according to the District Department of Transportation.

Watch out for issues stemming from an accident at the intersection of 23rd Street and Constitution Avenue NW, right near the ramp to I-66 in Virginia.

There’s also an accident reported on 22nd and Varnum streets NE.

8 :10 A.M. Update:

The accident on the eastbound Dulles Toll Road has been cleared and all lanes reopened. Very heavy delays remain, so if avoid this area for a while if you can.

The 7300 block of Temple Hills Road is closed due to an accident.

An accident in the 5900 block of 13th Street NW is blocking one southbound lane.

7:45 A.M. Update:

The accident on the eastbound Dulles Toll Road is now blocking the left lane. The center lane has reopened. There are still exceedingly bad delays approaching this spot, so try to hold off on heading this way if you can.

An accident in the 900 block of Rhode Island Avenue NE could cause delays there.

7:30 A.M. Update:

The accident on the eastbound Dulles Toll Road is still blocking the left two lanes at the main toll facilities.

7:15 A.M. Update:

The eastbound Dulles Toll Road is snarled approaching the toll facilities, where an accident is blocking the left two lanes. This area is never a picnic during the morning commute, but expect delays to be much more severe this morning.

7 A.M. Update:

An accident on the eastbound Dulles Toll Road is blocking the left two lanes at the main toll facilities. Expect delays.

The inner loop is backed up approaching Gallows Road.

I-95 North is still slow approaching the Fairfax County Parkway as well as around Woodbridge.

6:30 A.M. Update:

The accident on the inner loop of the Beltway at I-66 has been cleared.

The accident on I-95’s reversible lanes at the Fairfax County Parkway is still blocking the left shoulder of the northbound H.O.V. lanes and the left shoulder of the southbound main lanes. There is a fair amount of congestion approaching this spot.

Original Post:

Good morning, commuters!

We’re a week away from Thanksgiving. Have you started planning your holiday getaway? Dr. Gridlock and Dana Hedgpeth will be talking with a panel of transportation officials this afternoon about holiday travel and tackling reader questions.

This webcast will be conducted via Google+ Hangout, but you can watch the live discussion Thursday at noon. Just head back to this blog and you’ll be able to watch. You can also submit questions before and during the chat by tweeting @drgridlock or tweeting with the hashtag #gridchat.

And another note for commuters as you plan your day: A march to the Key Bridge beginning this afternoon and lasting at least into the early part of rush hour could cause traffic problems. The march from McPherson Square to the Key Bridge is scheduled to go from 2:30 p.m. to 6 p.m., so expect some traffic issues along that stretch during that time. For more, head here.

As for this morning’s commute: It’s going to be colder and wetter than we’ve seen in recent days, according to the Capital Weather Gang. The combination of clouds, cold air, wind and showers will make for a “less than optimal commute,” so dress warmly, pack an umbrella and expect to encounter some delays.

We’ll be keeping an eye on the roads and rails this morning, reporting any delays or issues — and we will need your help: If you hear about any congestion, delays, problems or anything at all, tell us in the comments section below or by tweeting @drgridlock.

So far:

— An accident on the inner loop of the Beltway at I-66 is blocking the right shoulder.

— An accident on I-95’s reversible lanes at the Fairfax County Parkway is blocking the left shoulder of the northbound H.O.V. lanes and the left shoulder of the southbound main lanes.