US Bridges

SR 0079 NB over SR 422 EB & WB Muddy CR

Good

Butler County, Pennsylvania · At SR 79 NB & SR 422 Int. · Structure no. 000000000048068

Built
2013
12 years old
Condition
Good
inspected July 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
296 ft
2 main spans
Daily traffic
15,271
2024 count
Owner
State
State Highway Agency

About this bridge

SR 0079 NB over SR 422 EB & WB Muddy CR is a steel continuous stringer/multi-beam or girder carrying SR 0079 NB over SR 422 EB & WB Muddy CR in Butler County, Pennsylvania. It was built in 2013, so it is 12 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 15,271 vehicles a day, roughly 18% of them trucks, projected to reach 16,140 by 2032. The structure is 296 ft (90.2 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 0079 NB
CrossesSR 422 EB & WB Muddy CR
LocationAt SR 79 NB & SR 422 Int.
RouteInterstate 79
CountyButler County
StatePennsylvania
Coordinates40.96251, -80.13457
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length296 ft (90.2 m)
Longest span165 ft (50.3 m)
Deck width57 ft (17.5 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,271 (2024)
Projected traffic16,140 by 2032
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 SR 0079 NB over SR 422 EB & WB Muddy CR built?

It was built in 2013, making it 12 years old in 2025.

What condition is SR 0079 NB over SR 422 EB & WB Muddy CR 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 July 2021.

How much traffic does SR 0079 NB over SR 422 EB & WB Muddy CR carry?

About 15,271 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is SR 0079 NB over SR 422 EB & WB Muddy CR?

The structure is 296 ft (90.2 m) long with a longest span of 165 ft (50.3 m) and a deck 57 ft wide.

Who owns SR 0079 NB over SR 422 EB & WB Muddy CR?

It is owned by the State Highway Agency.