US Bridges

T-510 Kniess Road over Crab Run

Good

Butler County, Pennsylvania · @ Int T-394 Fassinger RD · Structure no. 000000000042159

Built
2002
23 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

T-510 Kniess Road over Crab Run is a steel stringer/multi-beam or girder carrying T-510 Kniess Road over Crab Run in Butler County, Pennsylvania. It was built in 2002, so it is 23 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 9% of them trucks, projected to reach 125 by 2035. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT-510 Kniess Road
CrossesCrab Run
Location@ Int T-394 Fassinger RD
RouteCity Street 0
Coordinates40.85741, -80.06376
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic125 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 T-510 Kniess Road over Crab Run built?

It was built in 2002, making it 23 years old in 2025.

What condition is T-510 Kniess Road over Crab Run 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 November 2023.

How much traffic does T-510 Kniess Road over Crab Run carry?

About 100 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is T-510 Kniess Road over Crab Run?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns T-510 Kniess Road over Crab Run?

It is owned by the County Highway Agency.