US Bridges

Md 381 over Swanson Creek

Fair

Prince George's County, Maryland · On Charles CO Line · Structure no. 100000160060010

Built
1933
92 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
45 ft
2 main spans
Daily traffic
6,020
2009 count
Owner
State
State Highway Agency

About this bridge

Md 381 over Swanson Creek is a concrete slab carrying Md 381 over Swanson Creek in Prince George's County, Maryland. It was built in 1933, so it is 92 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 5 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 6,020 vehicles a day, roughly 8% of them trucks, projected to reach 6,953 by 2026. The structure is 45 ft (13.7 m) long and 31 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesMd 381
CrossesSwanson Creek
LocationOn Charles CO Line
RouteState Highway 381
CountyPrince George's County
StateMaryland
Coordinates38.55817, -76.73942
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81 US tons
Inventory rating48.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,020 (2009)
Projected traffic6,953 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$91,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 381 over Swanson Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is Md 381 over Swanson Creek 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 October 2024.

How much traffic does Md 381 over Swanson Creek carry?

About 6,020 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 381 over Swanson Creek?

The structure is 45 ft (13.7 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Md 381 over Swanson Creek?

It is owned by the State Highway Agency.