US Bridges

Md 313 over Spring Branch

Fair

Caroline County, Maryland · 2.33 Mile South of Md 314 · Structure no. 100000050006020

Built
1955
70 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
20 ft
Daily traffic
7,160
2009 count
Owner
State
State Highway Agency

About this bridge

Md 313 over Spring Branch is a concrete culvert carrying Md 313 over Spring Branch in Caroline 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 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 7,160 vehicles a day, roughly 8% of them trucks, projected to reach 8,440 by 2026. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMd 313
CrossesSpring Branch
Location2.33 Mile South of Md 314
RouteState Highway 313
CountyCaroline County
StateMaryland
Coordinates38.9437, -75.81232
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadH 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,160 (2009)
Projected traffic8,440 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Spring Branch built?

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

What condition is Md 313 over Spring 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 2023.

How much traffic does Md 313 over Spring Branch carry?

About 7,160 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 313 over Spring Branch?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns Md 313 over Spring Branch?

It is owned by the State Highway Agency.