US Bridges

Steelville Road over Knight Run

Fair

Chester County, Pennsylvania · .9MI W.Of 41 3687-K6 · Structure no. 000000000010844

Built
1940
85 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
460
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Steelville Road over Knight Run is a steel stringer/multi-beam or girder carrying Steelville Road over Knight Run in Chester County, Pennsylvania. It was built in 1940, so it is 85 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 460 vehicles a day, roughly 2% of them trucks, projected to reach 550 by 2036. The structure is 32 ft (9.8 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSteelville Road
CrossesKnight Run
Location.9MI W.Of 41 3687-K6
RouteState Highway 0
CountyChester County
StatePennsylvania
Coordinates39.90428, -75.94042
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2016)
Projected traffic550 by 2036
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$64,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Steelville Road over Knight Run built?

It was built in 1940, making it 85 years old in 2025.

What condition is Steelville Road over Knight Run 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 September 2024.

How much traffic does Steelville Road over Knight Run carry?

About 460 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Steelville Road over Knight Run?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns Steelville Road over Knight Run?

It is owned by the Town or Township Highway Agency.