US Bridges

Little Conestoga R over Black Horse Creek

Fair

Chester County, Pennsylvania · Marsh Creek Park 20D01 · Structure no. 000000000010612

Built
1973
52 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
6,755
2024 count
Owner
State
State Highway Agency

About this bridge

Little Conestoga R over Black Horse Creek is a prestressed concrete box beam or girders - multiple carrying Little Conestoga R over Black Horse Creek in Chester County, Pennsylvania. It was built in 1973, so it is 52 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 6,755 vehicles a day, roughly 6% of them trucks, projected to reach 7,861 by 2032. The structure is 38 ft (11.6 m) long and 48 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesLittle Conestoga R
CrossesBlack Horse Creek
LocationMarsh Creek Park 20D01
RouteState Highway 0
Coordinates40.08388, -75.72421
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span37 ft (11.3 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,755 (2024)
Projected traffic7,861 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Little Conestoga R over Black Horse Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Little Conestoga R over Black Horse 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 May 2023.

How much traffic does Little Conestoga R over Black Horse Creek carry?

About 6,755 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Little Conestoga R over Black Horse Creek?

The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.3 m) and a deck 48 ft wide.

Who owns Little Conestoga R over Black Horse Creek?

It is owned by the State Highway Agency.