US Bridges

Md 500 over Northwest Branch

Fair

Prince George's County, Maryland · 0.12 Mile East of Md 501 · Structure no. 100000160248030

Built
1987
38 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
24 ft
Daily traffic
41,631
2009 count
Owner
State
State Highway Agency

About this bridge

Md 500 over Northwest Branch is a steel culvert carrying Md 500 over Northwest Branch in Prince George's County, Maryland. It was built in 1987, so it is 38 years old, younger 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 41,631 vehicles a day, roughly 8% of them trucks, projected to reach 46,997 by 2026. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMd 500
CrossesNorthwest Branch
Location0.12 Mile East of Md 501
RouteState Highway 500
Coordinates38.95283, -76.96611
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,631 (2009)
Projected traffic46,997 by 2026
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 500 over Northwest Branch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Md 500 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 May 2024.

How much traffic does Md 500 over Northwest Branch carry?

About 41,631 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 500 over Northwest Branch?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns Md 500 over Northwest Branch?

It is owned by the State Highway Agency.