US Bridges

Md 460 over Little Annemessex River

Fair

Somerset County, Maryland · 0.52 Mile West of Md 413 · Structure no. 100000190013010

Built
1966
59 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
118 ft
7 main spans
Daily traffic
4,071
2023 count
Owner
State
State Highway Agency

About this bridge

Md 460 over Little Annemessex River is a wood or timber stringer/multi-beam or girder carrying Md 460 over Little Annemessex River in Somerset County, Maryland. It was built in 1966, so it is 59 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 4,071 vehicles a day, roughly 8% of them trucks, projected to reach 4,967 by 2043. The structure is 118 ft (36 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 460
CrossesLittle Annemessex River
Location0.52 Mile West of Md 413
RouteState Highway 460
Coordinates37.99548, -75.85201
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68.5 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length118 ft (36 m)
Longest span17 ft (5.2 m)
Deck width35 ft (10.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,071 (2023)
Projected traffic4,967 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$271,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 460 over Little Annemessex River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Md 460 over Little Annemessex 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 May 2024.

How much traffic does Md 460 over Little Annemessex River carry?

About 4,071 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Md 460 over Little Annemessex River?

The structure is 118 ft (36 m) long with a longest span of 17 ft (5.2 m) and a deck 35 ft wide.

Who owns Md 460 over Little Annemessex River?

It is owned by the State Highway Agency.