US Bridges

Pa 987 (lr 39031) over US 22(LR 771)

Fair

Lehigh County, Pennsylvania · Airport Rd.Interchange · Structure no. 000000000023208

Built
1973
52 years old, rebuilt 2018
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
328 ft
1 main span
Daily traffic
22,643
2024 count
Owner
State
State Highway Agency

About this bridge

Pa 987 (lr 39031) over US 22(LR 771) is a steel stringer/multi-beam or girder carrying Pa 987 (lr 39031) over US 22(LR 771) in Lehigh County, Pennsylvania. It was built in 1973 and reconstructed in 2018, so it is 52 years old, younger than the Pennsylvania average of 54.8 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 22,643 vehicles a day, roughly 10% of them trucks, projected to reach 28,372 by 2032. The structure is 328 ft (100 m) long and 100 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPa 987 (lr 39031)
CrossesUS 22(LR 771)
LocationAirport Rd.Interchange
RouteState Highway 987
CountyLehigh County
StatePennsylvania
Coordinates40.64315, -75.43183
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length328 ft (100 m)
Longest span205 ft (62.5 m)
Deck width100 ft (30.5 m)
Roadway width93 ft (28.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,643 (2024)
Projected traffic28,372 by 2032
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa 987 (lr 39031) over US 22(LR 771) built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2018.

What condition is Pa 987 (lr 39031) over US 22(LR 771) 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 2023.

How much traffic does Pa 987 (lr 39031) over US 22(LR 771) carry?

About 22,643 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Pa 987 (lr 39031) over US 22(LR 771)?

The structure is 328 ft (100 m) long with a longest span of 205 ft (62.5 m) and a deck 100 ft wide.

Who owns Pa 987 (lr 39031) over US 22(LR 771)?

It is owned by the State Highway Agency.