US Bridges

SR 309(LR 153) over I-78 (lr 1045)

Fair

Lehigh County, Pennsylvania · PA.309 over I-78 · Structure no. 000000000023151

Built
1988
37 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
377 ft
2 main spans
Daily traffic
48,199
2024 count
Owner
State
State Highway Agency

About this bridge

SR 309(LR 153) over I-78 (lr 1045) is a steel continuous stringer/multi-beam or girder carrying SR 309(LR 153) over I-78 (lr 1045) in Lehigh County, Pennsylvania. It was built in 1988, so it is 37 years old, younger 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 48,199 vehicles a day, roughly 12% of them trucks, projected to reach 60,441 by 2032. The structure is 377 ft (114.9 m) long and 80 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 309(LR 153)
CrossesI-78 (lr 1045)
LocationPA.309 over I-78
RouteState Highway 309
CountyLehigh County
StatePennsylvania
Coordinates40.55453, -75.43189
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 rating51 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 25 or greater
Structure length377 ft (114.9 m)
Longest span131 ft (39.9 m)
Deck width80 ft (24.5 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,199 (2024)
Projected traffic60,441 by 2032
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 SR 309(LR 153) over I-78 (lr 1045) built?

It was built in 1988, making it 37 years old in 2025.

What condition is SR 309(LR 153) over I-78 (lr 1045) 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 2024.

How much traffic does SR 309(LR 153) over I-78 (lr 1045) carry?

About 48,199 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is SR 309(LR 153) over I-78 (lr 1045)?

The structure is 377 ft (114.9 m) long with a longest span of 131 ft (39.9 m) and a deck 80 ft wide.

Who owns SR 309(LR 153) over I-78 (lr 1045)?

It is owned by the State Highway Agency.