US Bridges

Pa Tpk (I-476) over SR2023 LR39017

Good

Lehigh County, Pennsylvania · 1 MI South of Emmaus · Structure no. 000000000023540

Built
1955
70 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
49,446
2011 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-476) over SR2023 LR39017 is a concrete tee beam carrying Pa Tpk (I-476) over SR2023 LR39017 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 49,446 vehicles a day, roughly 17% of them trucks, projected to reach 71,429 by 2030. The structure is 33 ft (10.1 m) long and 68 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPa Tpk (I-476)
CrossesSR2023 LR39017
Location1 MI South of Emmaus
RouteInterstate 476
CountyLehigh County
StatePennsylvania
Coordinates40.50566, -75.50152
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width68 ft (20.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,446 (2011)
Projected traffic71,429 by 2030
Trucks17%
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$1,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-476) over SR2023 LR39017 built?

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

What condition is Pa Tpk (I-476) over SR2023 LR39017 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 July 2023.

How much traffic does Pa Tpk (I-476) over SR2023 LR39017 carry?

About 49,446 vehicles per day (2011 count), of which roughly 17% are trucks.

How long is Pa Tpk (I-476) over SR2023 LR39017?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 68 ft wide.

Who owns Pa Tpk (I-476) over SR2023 LR39017?

It is owned by the State Toll Authority.