US Bridges

Porters Mill Road over Pigeon Creek

FairPosted for load

Chester County, Pennsylvania · S Coventry Twp 3138-G10 · Structure no. 000000000010708

Built
1928
97 years old, rebuilt 1985
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
1,430
2019 count
Owner
County
County Highway Agency

About this bridge

Porters Mill Road over Pigeon Creek is a steel stringer/multi-beam or girder carrying Porters Mill Road over Pigeon Creek in Chester County, Pennsylvania. It was built in 1928 and reconstructed in 1985, so it is 97 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. Its operating status is: posted for load restriction.

It carries about 1,430 vehicles a day, roughly 6% of them trucks, projected to reach 1,745 by 2039. The structure is 37 ft (11.3 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesPorters Mill Road
CrossesPigeon Creek
LocationS Coventry Twp 3138-G10
RouteCity Street 0
Coordinates40.18979, -75.64698
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating33 US tons
Inventory rating9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span32 ft (9.8 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,430 (2019)
Projected traffic1,745 by 2039
Trucks6%
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

OwnerCounty Highway Agency
Maintained byCounty 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$68,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Porters Mill Road over Pigeon Creek built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1985.

What condition is Porters Mill Road over Pigeon 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 March 2023.

How much traffic does Porters Mill Road over Pigeon Creek carry?

About 1,430 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is Porters Mill Road over Pigeon Creek?

The structure is 37 ft (11.3 m) long with a longest span of 32 ft (9.8 m) and a deck 20 ft wide.

Who owns Porters Mill Road over Pigeon Creek?

It is owned by the County Highway Agency.