US Bridges

Ridge Road over French Creek

Fair

Chester County, Pennsylvania · Knauertown 5D11 · Structure no. 000000000009942

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
7,931
2024 count
Owner
State
State Highway Agency

About this bridge

Ridge Road over French Creek is a prestressed concrete box beam or girders - multiple carrying Ridge Road over French Creek in Chester County, Pennsylvania. It was built in 1959, so it is 66 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.

It carries about 7,931 vehicles a day, roughly 6% of them trucks, projected to reach 8,831 by 2032. The structure is 46 ft (14 m) long and 42 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesRidge Road
CrossesFrench Creek
LocationKnauertown 5D11
RouteState Highway 23
Coordinates40.17124, -75.72759
Functional classRural Minor Arterial

Condition and inspection

Fair

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

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.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating32 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width42 ft (12.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,931 (2024)
Projected traffic8,831 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ridge Road over French Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is Ridge Road over French 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 July 2023.

How much traffic does Ridge Road over French Creek carry?

About 7,931 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Ridge Road over French Creek?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 42 ft wide.

Who owns Ridge Road over French Creek?

It is owned by the State Highway Agency.