US Bridges

SR3001 over Trib to Allegheny River

Fair

Armstrong County, Pennsylvania · Bunker Hill Road · Structure no. 000000000003261

Built
1916
109 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
159
2024 count
Owner
State
State Highway Agency

About this bridge

SR3001 over Trib to Allegheny River is a concrete continuous slab carrying SR3001 over Trib to Allegheny River in Armstrong County, Pennsylvania. It was built in 1916, so it is 109 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 159 vehicles a day, roughly 2% of them trucks, projected to reach 110 by 2032. The structure is 29 ft (8.8 m) long and 29 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR3001
CrossesTrib to Allegheny River
LocationBunker Hill Road
RouteState Highway 0
CountyArmstrong County
StatePennsylvania
Coordinates40.79986, -79.52305
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length29 ft (8.8 m)
Longest span11 ft (3.4 m)
Deck width29 ft (8.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2024)
Projected traffic110 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$86,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR3001 over Trib to Allegheny River built?

It was built in 1916, making it 109 years old in 2025.

What condition is SR3001 over Trib to Allegheny River 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 SR3001 over Trib to Allegheny River carry?

About 159 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is SR3001 over Trib to Allegheny River?

The structure is 29 ft (8.8 m) long with a longest span of 11 ft (3.4 m) and a deck 29 ft wide.

Who owns SR3001 over Trib to Allegheny River?

It is owned by the State Highway Agency.