US Bridges

SR 6-US 6 over Nine Mile Run

Fair

Potter County, Pennsylvania · 3 MI W Walton · Structure no. 000000000030109

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
1,876
2023 count
Owner
State
State Highway Agency

About this bridge

SR 6-US 6 over Nine Mile Run is a prestressed concrete box beam or girders - multiple carrying SR 6-US 6 over Nine Mile Run in Potter County, Pennsylvania. It was built in 1967, so it is 58 years old, older 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 1,876 vehicles a day, roughly 30% of them trucks, projected to reach 2,487 by 2043. The structure is 51 ft (15.5 m) long and 44 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesSR 6-US 6
CrossesNine Mile Run
Location3 MI W Walton
RouteU.S. Route 6
CountyPotter County
StatePennsylvania
Coordinates41.78131, -77.81701
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span50 ft (15.2 m)
Deck width44 ft (13.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,876 (2023)
Projected traffic2,487 by 2043
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$491,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 6-US 6 over Nine Mile Run built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 6-US 6 over Nine Mile Run 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 April 2023.

How much traffic does SR 6-US 6 over Nine Mile Run carry?

About 1,876 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is SR 6-US 6 over Nine Mile Run?

The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.2 m) and a deck 44 ft wide.

Who owns SR 6-US 6 over Nine Mile Run?

It is owned by the State Highway Agency.