US Bridges

Ramp Ab over Pa Tpk (I-476)

Good

Lehigh County, Pennsylvania · Upper Macungie · Structure no. 000000000053332

Built
2016
9 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
152 ft
2 main spans
Daily traffic
500
2018 count
Owner
Toll Authority
State Toll Authority

About this bridge

Ramp Ab over Pa Tpk (I-476) is a steel continuous stringer/multi-beam or girder carrying Ramp Ab over Pa Tpk (I-476) in Lehigh County, Pennsylvania. It was built in 2016, so it is 9 years old, younger 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 500 vehicles a day, roughly 20% of them trucks, projected to reach 610 by 2038. The structure is 152 ft (46.3 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRamp Ab
CrossesPa Tpk (I-476)
LocationUpper Macungie
RouteInterstate 0
Coordinates40.57709, -75.5573
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length152 ft (46.3 m)
Longest span76 ft (23.2 m)
Deck width67 ft (20.3 m)
Roadway width61 ft (18.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2018)
Projected traffic610 by 2038
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp Ab over Pa Tpk (I-476) built?

It was built in 2016, making it 9 years old in 2025.

What condition is Ramp Ab over Pa Tpk (I-476) 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 August 2024.

How much traffic does Ramp Ab over Pa Tpk (I-476) carry?

About 500 vehicles per day (2018 count), of which roughly 20% are trucks.

How long is Ramp Ab over Pa Tpk (I-476)?

The structure is 152 ft (46.3 m) long with a longest span of 76 ft (23.2 m) and a deck 67 ft wide.

Who owns Ramp Ab over Pa Tpk (I-476)?

It is owned by the State Toll Authority.