US Bridges

Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR

Good

Lehigh County, Pennsylvania · Susquehanna St. Bridge · Structure no. 000000000023109

Built
1989
36 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
287 ft
4 main spans
Daily traffic
12,801
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR is a steel continuous stringer/multi-beam or girder carrying Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR in Lehigh County, Pennsylvania. It was built in 1989, so it is 36 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 12,801 vehicles a day, roughly 2% of them trucks, projected to reach 15,996 by 2032. The structure is 287 ft (87.5 m) long and 54 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPa 145/SUSQUEHANNA
CrossesTrout Creek & N.S. RR
LocationSusquehanna St. Bridge
RouteState Highway 145
CountyLehigh County
StatePennsylvania
Coordinates40.59037, -75.46099
Functional classUrban Other Principal Arterial

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length287 ft (87.5 m)
Longest span81 ft (24.7 m)
Deck width54 ft (16.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,801 (2024)
Projected traffic15,996 by 2032
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$2.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR built?

It was built in 1989, making it 36 years old in 2025.

What condition is Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR 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 June 2024.

How much traffic does Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR carry?

About 12,801 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR?

The structure is 287 ft (87.5 m) long with a longest span of 81 ft (24.7 m) and a deck 54 ft wide.

Who owns Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR?

It is owned by the City or Municipal Highway Agency.