US Bridges

Nasa Access Road over Baltimore-Washington Par

PoorClosed to traffic

Prince George's County, Maryland · Beltway to Exit 2 - Route · Structure no. 2170001P0000000

Built
1966
59 years old, rebuilt 2004
Condition
Poor
inspected April 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
381 ft
6 main spans
Daily traffic
10,000
2020 count
Owner
Federal
NASA

About this bridge

Nasa Access Road over Baltimore-Washington Par is a steel stringer/multi-beam or girder carrying Nasa Access Road over Baltimore-Washington Par in Prince George's County, Maryland. It was built in 1966 and reconstructed in 2004, so it is 59 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 10,000 vehicles a day, roughly 1% of them trucks, projected to reach 11,000 by 2040. The structure is 381 ft (116.1 m) long and 42 ft wide.

CarriesNasa Access Road
CrossesBaltimore-Washington Par
LocationBeltway to Exit 2 - Route
RouteFederal Lands Road 0
Coordinates39.00569, -76.8625
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length381 ft (116.1 m)
Longest span86 ft (26.3 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2020)
Projected traffic11,000 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNASA
Maintained byNASA
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nasa Access Road over Baltimore-Washington Par built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2004.

What condition is Nasa Access Road over Baltimore-Washington Par in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2022.

How much traffic does Nasa Access Road over Baltimore-Washington Par carry?

About 10,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nasa Access Road over Baltimore-Washington Par?

The structure is 381 ft (116.1 m) long with a longest span of 86 ft (26.3 m) and a deck 42 ft wide.

Who owns Nasa Access Road over Baltimore-Washington Par?

It is owned by the NASA.