After Wednesday’s heavy rainfall, the D.C. region struggled with road closures and flooding in Thursday’s morning commute.

There were no major accidents reported on area highways, but there were plenty of delays as some roads were closed.

Parts of Rock Creek Parkway were closed, including a section between P and Calvert streets NW. U.S. Park Police said the parkway between Beach Drive and Virginia Avenue NW would remain closed during the morning rush hour. Beach Drive NW between Rock Creek Parkway and Blagden Avenue and the ramps onto Rock Creek Parkway and Massachusetts Avenue also remained closed.

Rock Creek Parkway between Virginia Avenue and Shoreham was also closed due to high water, according to D.C. fire officials. But other parts of parkway in the District reopened early Thursday morning.

The National Park Service said in a tweet just after 9 a.m. that “due to a sewage spill” the Capital Crescent Trail is closed “until further notice.”

Parts of Connecticut Avenue, headed into the District, were jammed with heavy traffic, according to drivers.

In Montgomery County, northbound lanes of U.S. 29 between Lockwood and Crestmoor drives were closed because of flooding.

Earlier in the morning, Route 1 — one of the busiest roads in Fairfax County — was closed between Telegraph Road and the Fairfax County Parkway because of the “significant amount of water flowing across the road,” officials said.

In Laurel, roads in the area of Route 1 were closed because of a planned release at the Duckett Dam. Water flowed through area business parking lots and forced the evacuation of roughly 200 residents from a senior citizens apartment building. Just after 8 a.m., the evacuation in that area was lifted and authorities at the Washington Suburban Sanitary Commission said they were monitoring the water levels at the dam.

PHOTOS rushing water through the parking lot of Aamco on Rt 1 #Laurel #PatuxantRiver #mdwx #Floodapalooza pic.twitter.com/hg6Hnmtb4Y

— Brad Freitas (@NewsChopperBrad) May 1, 2014

#WSSC keeping a close eye on flooding on Rt 1 north of Main St. pic.twitter.com/9VKiPegcsU — WSSC Water News (@WSSCWaterNews) May 1, 2014

Police warned drivers to slow down on roads where there was standing water and to expect a longer commute Thursday. They also said drivers should not attempt to cross a road that is overrun with water.

@PGPDNews High standing water 15100 Marlboro Pike Upper Marlboro near courthouse. Traffic Delays. USE CAUTION. pic.twitter.com/hRqlMYf7TD — Irene Burks (@MajorBurks) May 1, 2014

PHOTO an example of what NOT to do on Marlboro Pk near Largo Rd #UpperMarlboro #mdtraffic #TurnAroundDontDrown pic.twitter.com/qItR2BZyyR — Brad Freitas (@NewsChopperBrad) May 1, 2014

Rail lines also experienced problems.

On MARC, riders were told they should expect trains to run 15 to 30 minutes late because of flooding. MARC said Metro would honor tickets from New Carrollton for passengers on its Penn Line. Just before 9 a.m., MARC suspended service on its Penn Line because of trees in the catenary between the Odenton area and BWI. Train 890 on MARC’s Brunswick line was terminated because of a disabled freight train. A commuter bus was available.

Metro’s Red, Blue and Orange line riders were also experiencing delays because of various problems.

Metro also warned that some of its buses may be late because of flooded streets throughout the region. The 86 bus was delayed because of standing water at Baltimore and Sunnyside avenues. Buses on the Z2, Z6 and Z8 are experienced delays because of a downed tree at Colesville Road and University Boulevard northbound.

http://www.washingtonpost.com/posttv/national/east-coast-weathers-huge-floods/2014/05/01/43259bd8-ea7c-4833-b82e-fb9559f58fc0_video.html