US Bridges

SR0079 NB over SR8005 (ramp E)

Fair

Butler County, Pennsylvania · Rock Lake NB · Structure no. 000000000007860

Built
1968
57 years old, rebuilt 1989
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
14,876
2024 count
Owner
State
State Highway Agency

About this bridge

SR0079 NB over SR8005 (ramp E) is a prestressed concrete stringer/multi-beam or girder carrying SR0079 NB over SR8005 (ramp E) in Butler County, Pennsylvania. It was built in 1968 and reconstructed in 1989, so it is 57 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 14,876 vehicles a day, roughly 13% of them trucks, projected to reach 21,073 by 2032. The structure is 180 ft (54.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR0079 NB
CrossesSR8005 (ramp E)
LocationRock Lake NB
RouteInterstate 79
CountyButler County
StatePennsylvania
Coordinates40.77305, -80.12872
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92 US tons
Inventory rating16 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span69 ft (21 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,876 (2024)
Projected traffic21,073 by 2032
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$257,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR0079 NB over SR8005 (ramp E) built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1989.

What condition is SR0079 NB over SR8005 (ramp E) 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 January 2023.

How much traffic does SR0079 NB over SR8005 (ramp E) carry?

About 14,876 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is SR0079 NB over SR8005 (ramp E)?

The structure is 180 ft (54.9 m) long with a longest span of 69 ft (21 m) and a deck 43 ft wide.

Who owns SR0079 NB over SR8005 (ramp E)?

It is owned by the State Highway Agency.