US Bridges

SR 309(LR781) over TWP.RD.870(BROADWAY St.)

Fair

Lehigh County, Pennsylvania · Over Broadway · Structure no. 000000000023156

Built
1958
67 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
48 ft
1 main span
Daily traffic
46,398
2024 count
Owner
State
State Highway Agency

About this bridge

SR 309(LR781) over TWP.RD.870(BROADWAY St.) is a concrete tee beam carrying SR 309(LR781) over TWP.RD.870(BROADWAY St.) 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 46,398 vehicles a day, roughly 8% of them trucks, projected to reach 61,809 by 2032. The structure is 48 ft (14.6 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(LR781)
CrossesTWP.RD.870(BROADWAY St.)
LocationOver Broadway
RouteState Highway 309
CountyLehigh County
StatePennsylvania
Coordinates40.58738, -75.55366
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 rating44 US tons
Inventory rating26 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span46 ft (14 m)
Deck width68 ft (20.6 m)
Roadway width62 ft (18.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,398 (2024)
Projected traffic61,809 by 2032
Trucks8%
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$308,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 309(LR781) over TWP.RD.870(BROADWAY St.) built?

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

What condition is SR 309(LR781) over TWP.RD.870(BROADWAY St.) 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(LR781) over TWP.RD.870(BROADWAY St.) carry?

About 46,398 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR 309(LR781) over TWP.RD.870(BROADWAY St.)?

The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 68 ft wide.

Who owns SR 309(LR781) over TWP.RD.870(BROADWAY St.)?

It is owned by the State Highway Agency.