US Bridges

SR4012 over Slippery Rock Creek

Good

Butler County, Pennsylvania · 1.3 MI W SR 308 Intersect · Structure no. 000000000055978

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
193 ft
2 main spans
Daily traffic
875
2024 count
Owner
State
State Highway Agency

About this bridge

SR4012 over Slippery Rock Creek is a steel continuous stringer/multi-beam or girder carrying SR4012 over Slippery Rock Creek in Butler County, Pennsylvania. It was built in 2018, so it is 7 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 875 vehicles a day, roughly 12% of them trucks, projected to reach 1,707 by 2032. The structure is 193 ft (58.8 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesSR4012
CrossesSlippery Rock Creek
Location1.3 MI W SR 308 Intersect
RouteState Highway 0
CountyButler County
StatePennsylvania
Coordinates41.10569, -79.9221
Functional classRural Minor Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length193 ft (58.8 m)
Longest span95 ft (29 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic875 (2024)
Projected traffic1,707 by 2032
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR4012 over Slippery Rock Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR4012 over Slippery Rock 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 October 2024.

How much traffic does SR4012 over Slippery Rock Creek carry?

About 875 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is SR4012 over Slippery Rock Creek?

The structure is 193 ft (58.8 m) long with a longest span of 95 ft (29 m) and a deck 33 ft wide.

Who owns SR4012 over Slippery Rock Creek?

It is owned by the State Highway Agency.