Two 60-year-old bridges over the Baltimore-Washington Parkway (Route 295) in Anne Arundel County will be closed overnight intermittently over the next year or so for rehabilitation work, the State Highway Administration has announced.

The closings are part of a $1.2 million project to replace the decks on the two Ridge Road bridges, as well as to clean and paint the structural steel and resurface the approaches. The work is expected to continue through next spring.

The SHA said that within the next few weeks its contractor will narrow the Ridge Road crossings to a single lane, controlled by a temporary  traffic signal. During off-peak hours, the SHA may close on or two  lanes of traffic on the parkway to ensure the safety of drivers and workers.  

According to the SHA, the two bridges were built in 1950 and carry 1,100  vehicles a  day. The agency said the deck replacement could extend the bridges' useful life by 20 years.