US Bridges

Airport RD SR 2057 over Carnahan Run

Good

Armstrong County, Pennsylvania · Laurel Point · Structure no. 000000000053500

Built
2016
9 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
449
2024 count
Owner
State
State Highway Agency

About this bridge

Airport RD SR 2057 over Carnahan Run is a prestressed concrete box beam or girders - multiple carrying Airport RD SR 2057 over Carnahan Run in Armstrong County, Pennsylvania. It was built in 2016, so it is 9 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 449 vehicles a day, roughly 2% of them trucks, projected to reach 619 by 2037. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesAirport RD SR 2057
CrossesCarnahan Run
LocationLaurel Point
RouteState Highway 0
CountyArmstrong County
StatePennsylvania
Coordinates40.63679, -79.53881
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating59 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length61 ft (18.6 m)
Longest span57 ft (17.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic449 (2024)
Projected traffic619 by 2037
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byPrivate (other than railroad)
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 Airport RD SR 2057 over Carnahan Run built?

It was built in 2016, making it 9 years old in 2025.

What condition is Airport RD SR 2057 over Carnahan Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Airport RD SR 2057 over Carnahan Run carry?

About 449 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Airport RD SR 2057 over Carnahan Run?

The structure is 61 ft (18.6 m) long with a longest span of 57 ft (17.4 m) and a deck 26 ft wide.

Who owns Airport RD SR 2057 over Carnahan Run?

It is owned by the State Highway Agency and maintained by the Private (other than railroad).