US Bridges

Ager Road over Northwest Branch

Fair

Prince George's County, Maryland · 0.73 MI N of Md 500 · Structure no. 200000P-0109010

Built
1961
64 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
118 ft
3 main spans
Daily traffic
18,463
2021 count
Owner
County
County Highway Agency

About this bridge

Ager Road over Northwest Branch is a prestressed concrete box beam or girders - multiple carrying Ager Road over Northwest Branch in Prince George's County, Maryland. It was built in 1961, so it is 64 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 18,463 vehicles a day, roughly 5% of them trucks, projected to reach 27,441 by 2041. The structure is 118 ft (36 m) long and 86 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesAger Road
CrossesNorthwest Branch
Location0.73 MI N of Md 500
RouteCounty Highway 1599
CountyPrince George's County
StateMaryland
Coordinates38.96331, -76.97104
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating44 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length118 ft (36 m)
Longest span39 ft (11.9 m)
Deck width86 ft (26.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,463 (2021)
Projected traffic27,441 by 2041
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$7,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ager Road over Northwest Branch built?

It was built in 1961, making it 64 years old in 2025.

What condition is Ager Road over Northwest Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Ager Road over Northwest Branch carry?

About 18,463 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Ager Road over Northwest Branch?

The structure is 118 ft (36 m) long with a longest span of 39 ft (11.9 m) and a deck 86 ft wide.

Who owns Ager Road over Northwest Branch?

It is owned by the County Highway Agency.