US Bridges

Md 313 over Choptank River

Fair

Caroline County, Maryland · 0.32 Mile North of Md 314 · Structure no. 100000050005010

Built
1949
76 years old, rebuilt 1987
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
263 ft
5 main spans
Daily traffic
8,230
2023 count
Owner
State
State Highway Agency

About this bridge

Md 313 over Choptank River is a steel stringer/multi-beam or girder carrying Md 313 over Choptank River in Caroline County, Maryland. It was built in 1949 and reconstructed in 1987, so it is 76 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 8,230 vehicles a day, roughly 8% of them trucks, projected to reach 10,042 by 2043. The structure is 263 ft (80.2 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMd 313
CrossesChoptank River
Location0.32 Mile North of Md 314
RouteState Highway 313
CountyCaroline County
StateMaryland
Coordinates38.97672, -75.80152
Functional classRural 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 inspectionJanuary 2024
Inspection intervalevery 24 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length263 ft (80.2 m)
Longest span52 ft (15.9 m)
Deck width39 ft (11.8 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,230 (2023)
Projected traffic10,042 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 313 over Choptank River built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1987.

What condition is Md 313 over Choptank 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 January 2024.

How much traffic does Md 313 over Choptank River carry?

About 8,230 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Md 313 over Choptank River?

The structure is 263 ft (80.2 m) long with a longest span of 52 ft (15.9 m) and a deck 39 ft wide.

Who owns Md 313 over Choptank River?

It is owned by the State Highway Agency.