US Bridges

Pa Tpk (I-476) over SR 0022 (LR771)

Fair

Lehigh County, Pennsylvania · Lehigh Valley Interchange · Structure no. 000000000022942

Built
1956
69 years old, rebuilt 1998
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
1 main span
Daily traffic
10,000
1994 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-476) over SR 0022 (LR771) is a steel stringer/multi-beam or girder carrying Pa Tpk (I-476) over SR 0022 (LR771) in Lehigh County, Pennsylvania. It was built in 1956 and reconstructed in 1998, so it is 69 years old, older 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 10,000 vehicles a day, roughly 10% of them trucks, projected to reach 15,364 by 2030. The structure is 105 ft (32 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesPa Tpk (I-476)
CrossesSR 0022 (LR771)
LocationLehigh Valley Interchange
CountyLehigh County
StatePennsylvania
Coordinates40.59641, -75.56893
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span98 ft (29.9 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (1994)
Projected traffic15,364 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$660,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-476) over SR 0022 (LR771) built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1998.

What condition is Pa Tpk (I-476) over SR 0022 (LR771) 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 August 2023.

How much traffic does Pa Tpk (I-476) over SR 0022 (LR771) carry?

About 10,000 vehicles per day (1994 count), of which roughly 10% are trucks.

How long is Pa Tpk (I-476) over SR 0022 (LR771)?

The structure is 105 ft (32 m) long with a longest span of 98 ft (29.9 m) and a deck 35 ft wide.

Who owns Pa Tpk (I-476) over SR 0022 (LR771)?

It is owned by the State Toll Authority.