US Bridges

PA309 (LR153) over Tumble Brook

Fair

Lehigh County, Pennsylvania · 0.4 Mi.S.Of SR 2028 · Structure no. 000000000023145

Built
1970
55 years old, rebuilt 1987
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
34,519
2024 count
Owner
State
State Highway Agency

About this bridge

PA309 (LR153) over Tumble Brook is a concrete slab carrying PA309 (LR153) over Tumble Brook in Lehigh County, Pennsylvania. It was built in 1970 and reconstructed in 1987, so it is 55 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 34,519 vehicles a day, roughly 10% of them trucks, projected to reach 51,152 by 2032. The structure is 26 ft (7.9 m) long and 76 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesPA309 (LR153)
CrossesTumble Brook
Location0.4 Mi.S.Of SR 2028
RouteState Highway 309
CountyLehigh County
StatePennsylvania
Coordinates40.51843, -75.38596
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width76 ft (23.2 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,519 (2024)
Projected traffic51,152 by 2032
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was PA309 (LR153) over Tumble Brook built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1987.

What condition is PA309 (LR153) over Tumble Brook 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 2023.

How much traffic does PA309 (LR153) over Tumble Brook carry?

About 34,519 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is PA309 (LR153) over Tumble Brook?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 76 ft wide.

Who owns PA309 (LR153) over Tumble Brook?

It is owned by the State Highway Agency.