US Bridges

Hess Mill Road over W. Br. White Clay Creek

Good

Chester County, Pennsylvania · 1/4 MI W PA-841 3909-G8 · Structure no. 000000000067994

Built
2020
5 years old
Condition
Good
inspected January 2023
Type
Arch - Deck
Concrete
Length
34 ft
1 main span
Daily traffic
500
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Hess Mill Road over W. Br. White Clay Creek is a concrete arch - deck carrying Hess Mill Road over W. Br. White Clay Creek in Chester County, Pennsylvania. It was built in 2020, so it is 5 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 2% of them trucks, projected to reach 615 by 2041. The structure is 34 ft (10.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHess Mill Road
CrossesW. Br. White Clay Creek
Location1/4 MI W PA-841 3909-G8
RouteCity Street 0
Coordinates39.76799, -75.8321
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating42.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2021)
Projected traffic615 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hess Mill Road over W. Br. White Clay Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Hess Mill Road over W. Br. White Clay Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does Hess Mill Road over W. Br. White Clay Creek carry?

About 500 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Hess Mill Road over W. Br. White Clay Creek?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.

Who owns Hess Mill Road over W. Br. White Clay Creek?

It is owned by the Town or Township Highway Agency.