US Bridges

SR8 NB R Frame HWY over Over Pa 308

Fair

Venango County, Pennsylvania · Irwin Township · Structure no. 000000000033647

Built
1975
50 years old, rebuilt 2020
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
185 ft
3 main spans
Daily traffic
3,032
2024 count
Owner
State
State Highway Agency

About this bridge

SR8 NB R Frame HWY over Over Pa 308 is a prestressed concrete stringer/multi-beam or girder carrying SR8 NB R Frame HWY over Over Pa 308 in Venango County, Pennsylvania. It was built in 1975 and reconstructed in 2020, so it is 50 years old, younger 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 6 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 3,032 vehicles a day, roughly 14% of them trucks, projected to reach 4,207 by 2032. The structure is 185 ft (56.4 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesSR8 NB R Frame HWY
CrossesOver Pa 308
LocationIrwin Township
RouteState Highway 8
CountyVenango County
StatePennsylvania
Coordinates41.26669, -79.92478
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length185 ft (56.4 m)
Longest span94 ft (28.7 m)
Deck width43 ft (13.2 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,032 (2024)
Projected traffic4,207 by 2032
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$367,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR8 NB R Frame HWY over Over Pa 308 built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2020.

What condition is SR8 NB R Frame HWY over Over Pa 308 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 May 2024.

How much traffic does SR8 NB R Frame HWY over Over Pa 308 carry?

About 3,032 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SR8 NB R Frame HWY over Over Pa 308?

The structure is 185 ft (56.4 m) long with a longest span of 94 ft (28.7 m) and a deck 43 ft wide.

Who owns SR8 NB R Frame HWY over Over Pa 308?

It is owned by the State Highway Agency.