US Bridges

Pa 145(LR 555) over Ironton Rr/Bike Path

Fair

Lehigh County, Pennsylvania · 0.9 Mi.S.Of PA329 · Structure no. 000000000023130

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
135 ft
3 main spans
Daily traffic
17,057
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 145(LR 555) over Ironton Rr/Bike Path is a prestressed concrete box beam or girders - multiple carrying Pa 145(LR 555) over Ironton Rr/Bike Path in Lehigh County, Pennsylvania. It was built in 1970, so it is 55 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 17,057 vehicles a day, roughly 6% of them trucks, projected to reach 28,836 by 2032. The structure is 135 ft (41.1 m) long and 92 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPa 145(LR 555)
CrossesIronton Rr/Bike Path
Location0.9 Mi.S.Of PA329
RouteState Highway 145
CountyLehigh County
StatePennsylvania
Coordinates40.67167, -75.51578
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
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 rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span56 ft (17.1 m)
Deck width92 ft (28 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,057 (2023)
Projected traffic28,836 by 2032
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa 145(LR 555) over Ironton Rr/Bike Path built?

It was built in 1970, making it 55 years old in 2025.

What condition is Pa 145(LR 555) over Ironton Rr/Bike Path 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 145(LR 555) over Ironton Rr/Bike Path carry?

About 17,057 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Pa 145(LR 555) over Ironton Rr/Bike Path?

The structure is 135 ft (41.1 m) long with a longest span of 56 ft (17.1 m) and a deck 92 ft wide.

Who owns Pa 145(LR 555) over Ironton Rr/Bike Path?

It is owned by the State Highway Agency.