US Bridges

SR 309(LR 781) over SR1002(TILGHMAN ST)LR443

Fair

Lehigh County, Pennsylvania · Tilghman St.Interchange · Structure no. 000000000023158

Built
1958
67 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
180 ft
3 main spans
Daily traffic
58,753
2024 count
Owner
State
State Highway Agency

About this bridge

SR 309(LR 781) over SR1002(TILGHMAN ST)LR443 is a steel continuous stringer/multi-beam or girder carrying SR 309(LR 781) over SR1002(TILGHMAN ST)LR443 in Lehigh County, Pennsylvania. It was built in 1958, 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 58,753 vehicles a day, roughly 5% of them trucks, projected to reach 65,842 by 2032. The structure is 180 ft (54.9 m) long and 68 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSR 309(LR 781)
CrossesSR1002(TILGHMAN ST)LR443
LocationTilghman St.Interchange
RouteState Highway 309
CountyLehigh County
StatePennsylvania
Coordinates40.59034, -75.55414
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span78 ft (23.8 m)
Deck width68 ft (20.6 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58,753 (2024)
Projected traffic65,842 by 2032
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$421,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 309(LR 781) over SR1002(TILGHMAN ST)LR443 built?

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

What condition is SR 309(LR 781) over SR1002(TILGHMAN ST)LR443 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 June 2023.

How much traffic does SR 309(LR 781) over SR1002(TILGHMAN ST)LR443 carry?

About 58,753 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is SR 309(LR 781) over SR1002(TILGHMAN ST)LR443?

The structure is 180 ft (54.9 m) long with a longest span of 78 ft (23.8 m) and a deck 68 ft wide.

Who owns SR 309(LR 781) over SR1002(TILGHMAN ST)LR443?

It is owned by the State Highway Agency.