US Bridges

Wilson Mill Road over W Branch of Big Elk Crk.

Fair

Chester County, Pennsylvania · .5 MI S Balt Pk 3907-K3 · Structure no. 000000000010650

Built
1984
41 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
297
2019 count
Owner
County
County Highway Agency

About this bridge

Wilson Mill Road over W Branch of Big Elk Crk. is a prestressed concrete box beam or girders - multiple carrying Wilson Mill Road over W Branch of Big Elk Crk. in Chester County, Pennsylvania. It was built in 1984, so it is 41 years old, younger 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 297 vehicles a day, roughly 9% of them trucks, projected to reach 362 by 2039. The structure is 43 ft (13.1 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWilson Mill Road
CrossesW Branch of Big Elk Crk.
Location.5 MI S Balt Pk 3907-K3
RouteCity Street 0
Coordinates39.79864, -75.94217
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating94 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic297 (2019)
Projected traffic362 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wilson Mill Road over W Branch of Big Elk Crk. built?

It was built in 1984, making it 41 years old in 2025.

What condition is Wilson Mill Road over W Branch of Big Elk Crk. 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 2024.

How much traffic does Wilson Mill Road over W Branch of Big Elk Crk. carry?

About 297 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Wilson Mill Road over W Branch of Big Elk Crk.?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.

Who owns Wilson Mill Road over W Branch of Big Elk Crk.?

It is owned by the County Highway Agency.