US Bridges

Pa Tpk (I-476) over T-392

Good

Lehigh County, Pennsylvania · 1.5 MI N of Bucks CO Line · Structure no. 000000000023536

Built
1955
70 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
44,406
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-476) over T-392 is a concrete tee beam carrying Pa Tpk (I-476) over T-392 in Lehigh County, Pennsylvania. It was built in 1955, so it is 70 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 44,406 vehicles a day, roughly 16% of them trucks, projected to reach 71,429 by 2030. The structure is 27 ft (8.2 m) long and 69 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesPa Tpk (I-476)
CrossesT-392
Location1.5 MI N of Bucks CO Line
CountyLehigh County
StatePennsylvania
Coordinates40.47182, -75.45403
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating40 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width69 ft (21 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,406 (2004)
Projected traffic71,429 by 2030
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$96,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-476) over T-392 built?

It was built in 1955, making it 70 years old in 2025.

What condition is Pa Tpk (I-476) over T-392 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Pa Tpk (I-476) over T-392 carry?

About 44,406 vehicles per day (2004 count), of which roughly 16% are trucks.

How long is Pa Tpk (I-476) over T-392?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 69 ft wide.

Who owns Pa Tpk (I-476) over T-392?

It is owned by the State Toll Authority.