US Bridges

SR4013 over Trib to Patterson Creek

Fair

Armstrong County, Pennsylvania · Fosters Mills · Structure no. 000000000003322

Built
1991
34 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
53
2024 count
Owner
State
State Highway Agency

About this bridge

SR4013 over Trib to Patterson Creek is a steel stringer/multi-beam or girder carrying SR4013 over Trib to Patterson Creek in Armstrong County, Pennsylvania. It was built in 1991, so it is 34 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 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 53 vehicles a day, roughly 9% of them trucks, projected to reach 83 by 2032. The structure is 38 ft (11.6 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSR4013
CrossesTrib to Patterson Creek
LocationFosters Mills
RouteState Highway 0
CountyArmstrong County
StatePennsylvania
Coordinates40.90557, -79.63492
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
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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating99 US tons
Inventory rating98.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span35 ft (10.7 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2024)
Projected traffic83 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR4013 over Trib to Patterson Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is SR4013 over Trib to Patterson 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 November 2024.

How much traffic does SR4013 over Trib to Patterson Creek carry?

About 53 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SR4013 over Trib to Patterson Creek?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 28 ft wide.

Who owns SR4013 over Trib to Patterson Creek?

It is owned by the State Highway Agency.