US Bridges

Is 81 NB over Showalter Road

Fair

Washington County, Maryland · 1.66 Miles S of Pa Line · Structure no. 100000210054011

Built
1958
67 years old, rebuilt 1976
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
134 ft
2 main spans
Daily traffic
47,030
2009 count
Owner
State
State Highway Agency

About this bridge

Is 81 NB over Showalter Road is a steel continuous stringer/multi-beam or girder carrying Is 81 NB over Showalter Road in Washington County, Maryland. It was built in 1958 and reconstructed in 1976, so it is 67 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 47,030 vehicles a day, roughly 8% of them trucks, projected to reach 77,310 by 2029. The structure is 134 ft (40.8 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIs 81 NB
CrossesShowalter Road
Location1.66 Miles S of Pa Line
RouteInterstate 81
CountyWashington County
StateMaryland
Coordinates39.70038, -77.73905
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span65 ft (19.8 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,030 (2009)
Projected traffic77,310 by 2029
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$805,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 81 NB over Showalter Road built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1976.

What condition is Is 81 NB over Showalter Road 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 April 2024.

How much traffic does Is 81 NB over Showalter Road carry?

About 47,030 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 81 NB over Showalter Road?

The structure is 134 ft (40.8 m) long with a longest span of 65 ft (19.8 m) and a deck 46 ft wide.

Who owns Is 81 NB over Showalter Road?

It is owned by the State Highway Agency.