US Bridges

Pa 309 NB (lr 781) over SR 2023 (lr 39107)

Fair

Lehigh County, Pennsylvania · PA.309NB over Vera Cruz · Structure no. 000000000023153

Built
1958
67 years old, rebuilt 1988
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
59 ft
1 main span
Daily traffic
20,874
2024 count
Owner
State
State Highway Agency

About this bridge

Pa 309 NB (lr 781) over SR 2023 (lr 39107) is a steel stringer/multi-beam or girder carrying Pa 309 NB (lr 781) over SR 2023 (lr 39107) in Lehigh County, Pennsylvania. It was built in 1958 and reconstructed in 1988, so it is 67 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 5 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 20,874 vehicles a day, roughly 10% of them trucks, projected to reach 31,466 by 2032. The structure is 59 ft (18 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPa 309 NB (lr 781)
CrossesSR 2023 (lr 39107)
LocationPA.309NB over Vera Cruz
RouteState Highway 309
CountyLehigh County
StatePennsylvania
Coordinates40.55802, -75.43907
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating74 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length59 ft (18 m)
Longest span53 ft (16.2 m)
Deck width48 ft (14.6 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,874 (2024)
Projected traffic31,466 by 2032
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 309 NB (lr 781) over SR 2023 (lr 39107) built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1988.

What condition is Pa 309 NB (lr 781) over SR 2023 (lr 39107) 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 December 2022.

How much traffic does Pa 309 NB (lr 781) over SR 2023 (lr 39107) carry?

About 20,874 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Pa 309 NB (lr 781) over SR 2023 (lr 39107)?

The structure is 59 ft (18 m) long with a longest span of 53 ft (16.2 m) and a deck 48 ft wide.

Who owns Pa 309 NB (lr 781) over SR 2023 (lr 39107)?

It is owned by the State Highway Agency.