![One travel lane has opened in each direction in the northbound lanes of Connecticut Avenue at Knowles Avenue. The entire road was blocked for much of the morning rush. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/CONN-AVE-OPEN.png)
![Two-way traffic in the northbound lanes of Connecticut Avenue at Knowles Avenue is expected by 7 a.m. Wednesday. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/MORE-CONN-AVE.png)
![Preparations are underway to open northbound Connecticut Avenue at Knowles Avenue. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/Preparation.png)
![Connecticut Avenue remains closed at Knowles Avenue as of about 6 a.m. Wednesday. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/EARLIER-CONN-AVE.png)
At TWO spots on NB Conn Ave in paving work zone near here orange portable signs warn: caution OVERHEAD WIRES #WTOP pic.twitter.com/Ilulhd4gGU
— Kristi King (@kingWTOP) September 9, 2015
Utility pole snapped off 10ft above base now held upright planted on Conn Av SB at Knowles. Conn Av CLSD nb/sb #WTOP pic.twitter.com/bhgLCnmRZk
— Kristi King (@kingWTOP) September 9, 2015
![Connecticut Avenue](https://wtop.com/wp-content/uploads/2015/09/CONNAVE.png)
![One travel lane has opened in each direction in the northbound lanes of Connecticut Avenue at Knowles Avenue. The entire road was blocked for much of the morning rush. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/CONN-AVE-OPEN-260x174.png)
![Two-way traffic in the northbound lanes of Connecticut Avenue at Knowles Avenue is expected by 7 a.m. Wednesday. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/MORE-CONN-AVE-260x174.png)
![Preparations are underway to open northbound Connecticut Avenue at Knowles Avenue. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/Preparation-260x174.png)
![Connecticut Avenue remains closed at Knowles Avenue as of about 6 a.m. Wednesday. (WTOP/Kristi King)](https://wtop.com/wp-content/uploads/2015/09/EARLIER-CONN-AVE-260x174.png)
![Connecticut Avenue](https://wtop.com/wp-content/uploads/2015/09/CONNAVE-260x174.png)
UPDATE 11:16 a.m. 9/9/2015: Only the southbound right lane is still closed.
EARLIER: WASHINGTON — All lanes of Connecticut Avenue are blocked at Knowles Avenue in Kensington, Maryland, and they’re expected to remain that way through the Wednesday-morning rush.
Authorities say that a dump truck with the paving operation in the northbound lanes of Connecticut Avenue went through the intersection with the bed of his truck in the up position between midnight and 1 a.m. It snagged and tore down wires on the northbound side, which eventually brought down poles on the southbound side.
Southbound Connecticut Avenue is detoured to the left on Knowles Avenue; northbound is diverted at Prospect Street.
The wires reportedly belong to Pepco, Verizon and Comcast, so repairs could take some time.