US Bridges

Pa Tpk (I-276) over US-309

Good

Montgomery County, Pennsylvania · West of Ft Washingtonintg · Structure no. 000000000028184

Built
2000
25 years old
Condition
Good
inspected May 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
280 ft
3 main spans
Daily traffic
74,921
2001 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-276) over US-309 is a steel continuous stringer/multi-beam or girder carrying Pa Tpk (I-276) over US-309 in Montgomery County, Pennsylvania. It was built in 2000, so it is 25 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 74,921 vehicles a day, roughly 14% of them trucks, projected to reach 103,041 by 2030. The structure is 280 ft (85.3 m) long and 121 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPa Tpk (I-276)
CrossesUS-309
LocationWest of Ft Washingtonintg
RouteInterstate 276
CountyMontgomery County
StatePennsylvania
Coordinates40.1311, -75.20146
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length280 ft (85.3 m)
Longest span116 ft (35.4 m)
Deck width121 ft (36.9 m)
Roadway width115 ft (35.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,921 (2001)
Projected traffic103,041 by 2030
Trucks14%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$618,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-276) over US-309 built?

It was built in 2000, making it 25 years old in 2025.

What condition is Pa Tpk (I-276) over US-309 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2022.

How much traffic does Pa Tpk (I-276) over US-309 carry?

About 74,921 vehicles per day (2001 count), of which roughly 14% are trucks.

How long is Pa Tpk (I-276) over US-309?

The structure is 280 ft (85.3 m) long with a longest span of 116 ft (35.4 m) and a deck 121 ft wide.

Who owns Pa Tpk (I-276) over US-309?

It is owned by the State Toll Authority.