US Bridges

South Wolf Rock RD over Tub Mill Run

Good

Somerset County, Pennsylvania · Forbes State Forest · Structure no. 000000000052408

Built
2014
11 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
25
2015 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

South Wolf Rock RD over Tub Mill Run is a prestressed concrete box beam or girders - multiple carrying South Wolf Rock RD over Tub Mill Run in Somerset County, Pennsylvania. It was built in 2014, so it is 11 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 35 by 2035. The structure is 36 ft (11 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSouth Wolf Rock RD
CrossesTub Mill Run
LocationForbes State Forest
RouteState Lands Road 0
Coordinates39.7663, -79.1374
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating50.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width20 ft (6 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2015)
Projected traffic35 by 2035
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 South Wolf Rock RD over Tub Mill Run built?

It was built in 2014, making it 11 years old in 2025.

What condition is South Wolf Rock RD over Tub Mill 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 May 2023.

How much traffic does South Wolf Rock RD over Tub Mill Run carry?

About 25 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is South Wolf Rock RD over Tub Mill Run?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 20 ft wide.

Who owns South Wolf Rock RD over Tub Mill Run?

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