US Bridges

Is 81 over Br of Conococheague Cree

Fair

Washington County, Maryland · 0.09 Mile North of US 11 · Structure no. 100000210082020

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
161 ft
Daily traffic
61,350
2009 count
Owner
State
State Highway Agency

About this bridge

Is 81 over Br of Conococheague Cree is a concrete culvert carrying Is 81 over Br of Conococheague Cree in Washington County, Maryland. It was built in 1965, so it is 60 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 61,350 vehicles a day, roughly 8% of them trucks, projected to reach 87,850 by 2029. The structure is 161 ft (49.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIs 81
CrossesBr of Conococheague Cree
Location0.09 Mile North of US 11
RouteInterstate 81
Coordinates39.60715, -77.80204
Functional classUrban Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 20
Structure length161 ft (49.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61,350 (2009)
Projected traffic87,850 by 2029
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Is 81 over Br of Conococheague Cree built?

It was built in 1965, making it 60 years old in 2025.

What condition is Is 81 over Br of Conococheague Cree 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 December 2023.

How much traffic does Is 81 over Br of Conococheague Cree carry?

About 61,350 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 81 over Br of Conococheague Cree?

The structure is 161 ft (49.1 m) long with a longest span of 10 ft (3 m).

Who owns Is 81 over Br of Conococheague Cree?

It is owned by the State Highway Agency.