US Bridges

Md 5 over ST Marys River

Fair

St. Mary's County, Maryland · 0.10 Mile North of Md 246 · Structure no. 100000180006010

Built
1955
70 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
78 ft
2 main spans
Daily traffic
22,642
2018 count
Owner
State
State Highway Agency

About this bridge

Md 5 over ST Marys River is a concrete tee beam carrying Md 5 over ST Marys River in St. Mary's County, Maryland. It was built in 1955, so it is 70 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 22,642 vehicles a day, roughly 8% of them trucks, projected to reach 22,684 by 2038. The structure is 78 ft (23.8 m) long and 58 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesMd 5
CrossesST Marys River
Location0.10 Mile North of Md 246
RouteState Highway 5
CountySt. Mary's County
StateMaryland
Coordinates38.23706, -76.49773
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length78 ft (23.8 m)
Longest span40 ft (12.2 m)
Deck width58 ft (17.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,642 (2018)
Projected traffic22,684 by 2038
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$299,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 5 over ST Marys River built?

It was built in 1955, making it 70 years old in 2025.

What condition is Md 5 over ST Marys River 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 5 over ST Marys River carry?

About 22,642 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is Md 5 over ST Marys River?

The structure is 78 ft (23.8 m) long with a longest span of 40 ft (12.2 m) and a deck 58 ft wide.

Who owns Md 5 over ST Marys River?

It is owned by the State Highway Agency.