US Bridges

I-78 & Pa 309 over SR 2010 & Lt Lehigh CR

Fair

Lehigh County, Pennsylvania · 0.8 M.S.Of Cedar Crest · Structure no. 000000000023050

Built
1958
67 years old, rebuilt 1988
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
661 ft
1 main span
Daily traffic
83,965
2024 count
Owner
State
State Highway Agency

About this bridge

I-78 & Pa 309 over SR 2010 & Lt Lehigh CR is a concrete arch - deck carrying I-78 & Pa 309 over SR 2010 & Lt Lehigh CR 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 83,965 vehicles a day, roughly 19% of them trucks, projected to reach 117,029 by 2032. The structure is 661 ft (201.5 m) long and 114 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesI-78 & Pa 309
CrossesSR 2010 & Lt Lehigh CR
Location0.8 M.S.Of Cedar Crest
RouteInterstate 78
Coordinates40.56614, -75.50254
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.1 US tons
Inventory rating27 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+9 approach)
Design loadHS 25 or greater
Structure length661 ft (201.5 m)
Longest span231 ft (70.4 m)
Deck width114 ft (34.6 m)
Roadway width107 ft (32.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83,965 (2024)
Projected traffic117,029 by 2032
Trucks19%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-78 & Pa 309 over SR 2010 & Lt Lehigh CR built?

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

What condition is I-78 & Pa 309 over SR 2010 & Lt Lehigh CR 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 November 2023.

How much traffic does I-78 & Pa 309 over SR 2010 & Lt Lehigh CR carry?

About 83,965 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is I-78 & Pa 309 over SR 2010 & Lt Lehigh CR?

The structure is 661 ft (201.5 m) long with a longest span of 231 ft (70.4 m) and a deck 114 ft wide.

Who owns I-78 & Pa 309 over SR 2010 & Lt Lehigh CR?

It is owned by the State Highway Agency.