US Bridges

Cottage Avenue over Pennypack Creek

Poor

Montgomery County, Pennsylvania · Near Blair Mill RD3258-K2 · Structure no. 000000000041079

Built
1932
93 years old
Condition
Poor
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
1,000
2018 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Cottage Avenue over Pennypack Creek is a steel stringer/multi-beam or girder carrying Cottage Avenue over Pennypack Creek in Montgomery County, Pennsylvania. It was built in 1932, so it is 93 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,250 by 2038. The structure is 38 ft (11.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCottage Avenue
CrossesPennypack Creek
LocationNear Blair Mill RD3258-K2
RouteCity Street 0
Coordinates40.17801, -75.12706
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89 US tons
Inventory rating53 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span35 ft (10.7 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2018)
Projected traffic1,250 by 2038
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cottage Avenue over Pennypack Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is Cottage Avenue over Pennypack Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2022.

How much traffic does Cottage Avenue over Pennypack Creek carry?

About 1,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Cottage Avenue over Pennypack Creek?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 40 ft wide.

Who owns Cottage Avenue over Pennypack Creek?

It is owned by the Town or Township Highway Agency.