US Bridges

Township Line Road over Cobbs Creek

Poor

Delaware County, Pennsylvania · Del.-Phila.Line 26J08 · Structure no. 000000000014810

Built
1934
91 years old
Condition
Poor
inspected January 2024
Type
Arch - Deck
Concrete
Length
30 ft
1 main span
Daily traffic
27,899
2024 count
Owner
State
State Highway Agency

About this bridge

Township Line Road over Cobbs Creek is a concrete arch - deck carrying Township Line Road over Cobbs Creek in Delaware 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 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 27,899 vehicles a day, roughly 4% of them trucks, projected to reach 32,237 by 2035. The structure is 30 ft (9.1 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTownship Line Road
CrossesCobbs Creek
LocationDel.-Phila.Line 26J08
RouteU.S. Route 1
CountyDelaware County
StatePennsylvania
Coordinates39.97497, -75.28024
Functional classUrban Other Principal Arterial

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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width55 ft (16.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,899 (2024)
Projected traffic32,237 by 2035
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$420,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Township Line Road over Cobbs Creek built?

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

What condition is Township Line Road over Cobbs 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 January 2024.

How much traffic does Township Line Road over Cobbs Creek carry?

About 27,899 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Township Line Road over Cobbs Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 55 ft wide.

Who owns Township Line Road over Cobbs Creek?

It is owned by the State Highway Agency.