US Bridges

Clay Mine Road over Six Mile Run

Good

Centre County, Pennsylvania · W Black Moshannon ST Park · Structure no. 000000000047574

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
15
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Clay Mine Road over Six Mile Run is a prestressed concrete box beam or girders - multiple carrying Clay Mine Road over Six Mile Run in Centre County, Pennsylvania. It was built in 2012, so it is 13 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15 vehicles a day, projected to reach 20 by 2044. The structure is 40 ft (12.2 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesClay Mine Road
CrossesSix Mile Run
LocationW Black Moshannon ST Park
RouteState Lands Road 0
CountyCentre County
StatePennsylvania
Coordinates40.8844, -78.1164
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal 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 rating72.9 US tons
Inventory rating45.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic20 by 2044
Trucks—
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 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 Clay Mine Road over Six Mile Run built?

It was built in 2012, making it 13 years old in 2025.

What condition is Clay Mine Road over Six Mile 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 Clay Mine Road over Six Mile Run carry?

About 15 vehicles per day (2024 count).

How long is Clay Mine Road over Six Mile Run?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 22 ft wide.

Who owns Clay Mine Road over Six Mile Run?

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