US Bridges

Lafayette Avenue over Wissahickon Creek

Fair

Montgomery County, Pennsylvania · Whitemarsh 3257E9 · Structure no. 000000000027715

Built
1963
62 years old, rebuilt 2011
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
106 ft
2 main spans
Daily traffic
5,733
2024 count
Owner
State
State Highway Agency

About this bridge

Lafayette Avenue over Wissahickon Creek is a prestressed concrete continuous box beam or girders - multiple carrying Lafayette Avenue over Wissahickon Creek in Montgomery County, Pennsylvania. It was built in 1963 and reconstructed in 2011, so it is 62 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 6 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 5,733 vehicles a day, roughly 9% of them trucks, projected to reach 7,847 by 2032. The structure is 106 ft (32.3 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLafayette Avenue
CrossesWissahickon Creek
LocationWhitemarsh 3257E9
RouteState Highway 0
Coordinates40.13181, -75.22222
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span52 ft (15.8 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,733 (2024)
Projected traffic7,847 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$280,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lafayette Avenue over Wissahickon Creek built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2011.

What condition is Lafayette Avenue over Wissahickon Creek 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 May 2023.

How much traffic does Lafayette Avenue over Wissahickon Creek carry?

About 5,733 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Lafayette Avenue over Wissahickon Creek?

The structure is 106 ft (32.3 m) long with a longest span of 52 ft (15.8 m) and a deck 33 ft wide.

Who owns Lafayette Avenue over Wissahickon Creek?

It is owned by the State Highway Agency.