US Bridges

Willow Grove Ave. over Pa 309 By-Pass

Good

Montgomery County, Pennsylvania · Laverock 3370B05 · Structure no. 000000000044108

Built
2007
18 years old
Condition
Good
inspected December 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
101 ft
1 main span
Daily traffic
9,786
2024 count
Owner
State
State Highway Agency

About this bridge

Willow Grove Ave. over Pa 309 By-Pass is a steel stringer/multi-beam or girder carrying Willow Grove Ave. over Pa 309 By-Pass in Montgomery County, Pennsylvania. It was built in 2007, so it is 18 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 9,786 vehicles a day, roughly 7% of them trucks, projected to reach 12,147 by 2032. The structure is 101 ft (30.8 m) long and 51 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWillow Grove Ave.
CrossesPa 309 By-Pass
LocationLaverock 3370B05
RouteState Highway 0
CountyMontgomery County
StatePennsylvania
Coordinates40.09918, -75.17987
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2021
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 alignment7: Better than present minimum criteria
Operating rating86 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length101 ft (30.8 m)
Longest span97 ft (29.6 m)
Deck width51 ft (15.4 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,786 (2024)
Projected traffic12,147 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 Willow Grove Ave. over Pa 309 By-Pass built?

It was built in 2007, making it 18 years old in 2025.

What condition is Willow Grove Ave. over Pa 309 By-Pass 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 December 2021.

How much traffic does Willow Grove Ave. over Pa 309 By-Pass carry?

About 9,786 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Willow Grove Ave. over Pa 309 By-Pass?

The structure is 101 ft (30.8 m) long with a longest span of 97 ft (29.6 m) and a deck 51 ft wide.

Who owns Willow Grove Ave. over Pa 309 By-Pass?

It is owned by the State Highway Agency.