US Bridges

Pa 309 By-Pass over Pa Turnpike Ramp Ab

Fair

Montgomery County, Pennsylvania · Fort Washington Int. · Structure no. 000000000045313

Built
2008
17 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
1 main span
Daily traffic
65,877
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 309 By-Pass over Pa Turnpike Ramp Ab is a steel stringer/multi-beam or girder carrying Pa 309 By-Pass over Pa Turnpike Ramp Ab in Montgomery County, Pennsylvania. It was built in 2008, so it is 17 years old, younger 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 65,877 vehicles a day, roughly 4% of them trucks, projected to reach 67,915 by 2032. The structure is 106 ft (32.3 m) long and 153 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesPa 309 By-Pass
CrossesPa Turnpike Ramp Ab
LocationFort Washington Int.
RouteState Highway 309
CountyMontgomery County
StatePennsylvania
Coordinates40.13333, -75.20167
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span102 ft (31.1 m)
Deck width153 ft (46.5 m)
Roadway width145 ft (44.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,877 (2023)
Projected traffic67,915 by 2032
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa 309 By-Pass over Pa Turnpike Ramp Ab built?

It was built in 2008, making it 17 years old in 2025.

What condition is Pa 309 By-Pass over Pa Turnpike Ramp Ab 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 September 2024.

How much traffic does Pa 309 By-Pass over Pa Turnpike Ramp Ab carry?

About 65,877 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Pa 309 By-Pass over Pa Turnpike Ramp Ab?

The structure is 106 ft (32.3 m) long with a longest span of 102 ft (31.1 m) and a deck 153 ft wide.

Who owns Pa 309 By-Pass over Pa Turnpike Ramp Ab?

It is owned by the State Highway Agency.