US Bridges

Martin Gap Road over Standing Stone Creek

Fair

Huntingdon County, Pennsylvania · At T-486 Intersect · Structure no. 000000000018959

Built
2001
24 years old
Condition
Fair
inspected September 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
141
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Martin Gap Road over Standing Stone Creek is a prestressed concrete box beam or girders - multiple carrying Martin Gap Road over Standing Stone Creek in Huntingdon County, Pennsylvania. It was built in 2001, so it is 24 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 141 vehicles a day, roughly 5% of them trucks, projected to reach 315 by 2032. The structure is 57 ft (17.4 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMartin Gap Road
CrossesStanding Stone Creek
LocationAt T-486 Intersect
RouteState Highway 0
CountyHuntingdon County
StatePennsylvania
Coordinates40.5798, -77.8597
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating106 US tons
Inventory rating49.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span54 ft (16.5 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic141 (2024)
Projected traffic315 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Martin Gap Road over Standing Stone Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Martin Gap Road over Standing Stone 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 September 2022.

How much traffic does Martin Gap Road over Standing Stone Creek carry?

About 141 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Martin Gap Road over Standing Stone Creek?

The structure is 57 ft (17.4 m) long with a longest span of 54 ft (16.5 m) and a deck 29 ft wide.

Who owns Martin Gap Road over Standing Stone Creek?

It is owned by the State Park, Forest, or Reservation Agency.