US Bridges

SR4007 over Trib to Buffalo Creek

Fair

Armstrong County, Pennsylvania · Rattigan NO.4 · Structure no. 000000000003309

Built
1941
84 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
21 ft
1 main span
Daily traffic
171
2024 count
Owner
State
State Highway Agency

About this bridge

SR4007 over Trib to Buffalo Creek is a concrete slab carrying SR4007 over Trib to Buffalo Creek in Armstrong County, Pennsylvania. It was built in 1941, so it is 84 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 171 vehicles a day, roughly 4% of them trucks, projected to reach 244 by 2032. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR4007
CrossesTrib to Buffalo Creek
LocationRattigan NO.4
RouteState Highway 0
CountyArmstrong County
StatePennsylvania
Coordinates40.89458, -79.68926
Functional classRural 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
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length21 ft (6.4 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic171 (2024)
Projected traffic244 by 2032
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$65,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR4007 over Trib to Buffalo Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is SR4007 over Trib to Buffalo Creek 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 October 2024.

How much traffic does SR4007 over Trib to Buffalo Creek carry?

About 171 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR4007 over Trib to Buffalo Creek?

The structure is 21 ft (6.4 m) long with a longest span of 18 ft (5.5 m).

Who owns SR4007 over Trib to Buffalo Creek?

It is owned by the State Highway Agency.