US Bridges

Traffic Route 309 over Mckean Road & Path

Good

Montgomery County, Pennsylvania · Spring House 3145F10 · Structure no. 000000000027393

Built
1958
67 years old, rebuilt 2010
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
128 ft
3 main spans
Daily traffic
49,832
2024 count
Owner
State
State Highway Agency

About this bridge

Traffic Route 309 over Mckean Road & Path is a steel continuous stringer/multi-beam or girder carrying Traffic Route 309 over Mckean Road & Path in Montgomery County, Pennsylvania. It was built in 1958 and reconstructed in 2010, 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 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 49,832 vehicles a day, roughly 5% of them trucks, projected to reach 50,851 by 2032. The structure is 128 ft (39 m) long and 85 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTraffic Route 309
CrossesMckean Road & Path
LocationSpring House 3145F10
RouteState Highway 309
Coordinates40.19037, -75.2152
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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 rating66 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length128 ft (39 m)
Longest span57 ft (17.4 m)
Deck width85 ft (25.9 m)
Roadway width79 ft (24.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,832 (2024)
Projected traffic50,851 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$1.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Traffic Route 309 over Mckean Road & Path built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2010.

What condition is Traffic Route 309 over Mckean Road & Path 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 August 2022.

How much traffic does Traffic Route 309 over Mckean Road & Path carry?

About 49,832 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Traffic Route 309 over Mckean Road & Path?

The structure is 128 ft (39 m) long with a longest span of 57 ft (17.4 m) and a deck 85 ft wide.

Who owns Traffic Route 309 over Mckean Road & Path?

It is owned by the State Highway Agency.