US Bridges

Bethlehem Pike over Willow Run

Fair

Montgomery County, Pennsylvania · 1 Mile to Penllyn 3257D01 · Structure no. 000000000027625

Built
1934
91 years old
Condition
Fair
inspected June 2024
Type
Arch - Deck
Concrete
Length
23 ft
1 main span
Daily traffic
9,021
2023 count
Owner
State
State Highway Agency

About this bridge

Bethlehem Pike over Willow Run is a concrete arch - deck carrying Bethlehem Pike over Willow Run in Montgomery County, Pennsylvania. It was built in 1934, so it is 91 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 9,021 vehicles a day, roughly 5% of them trucks, projected to reach 17,874 by 2032. The structure is 23 ft (7 m) long and 52 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesBethlehem Pike
CrossesWillow Run
Location1 Mile to Penllyn 3257D01
RouteState Highway 0
CountyMontgomery County
StatePennsylvania
Coordinates40.1866, -75.22749
Functional classUrban Minor 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating87 US tons
Inventory rating43 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width52 ft (15.8 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,021 (2023)
Projected traffic17,874 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$123,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bethlehem Pike over Willow Run built?

It was built in 1934, making it 91 years old in 2025.

What condition is Bethlehem Pike over Willow Run 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 June 2024.

How much traffic does Bethlehem Pike over Willow Run carry?

About 9,021 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Bethlehem Pike over Willow Run?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 52 ft wide.

Who owns Bethlehem Pike over Willow Run?

It is owned by the State Highway Agency.