US Bridges

SR 6 - US6 over Lillibridge Creek

Good

McKean County, Pennsylvania · Port Allegany · Structure no. 000000000052683

Built
2015
10 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
7,041
2024 count
Owner
State
State Highway Agency

About this bridge

SR 6 - US6 over Lillibridge Creek is a prestressed concrete box beam or girders - multiple carrying SR 6 - US6 over Lillibridge Creek in McKean County, Pennsylvania. It was built in 2015, so it is 10 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 7,041 vehicles a day, roughly 13% of them trucks, projected to reach 8,883 by 2043. The structure is 49 ft (14.9 m) long and 52 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesSR 6 - US6
CrossesLillibridge Creek
LocationPort Allegany
RouteU.S. Route 6
Coordinates41.80973, -78.27966
Functional classRural Principal Arterial - Other

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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length49 ft (14.9 m)
Longest span49 ft (14.9 m)
Deck width52 ft (15.8 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,041 (2024)
Projected traffic8,883 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed24.9 mi (40 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 6 - US6 over Lillibridge Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is SR 6 - US6 over Lillibridge Creek 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 2023.

How much traffic does SR 6 - US6 over Lillibridge Creek carry?

About 7,041 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is SR 6 - US6 over Lillibridge Creek?

The structure is 49 ft (14.9 m) long with a longest span of 49 ft (14.9 m) and a deck 52 ft wide.

Who owns SR 6 - US6 over Lillibridge Creek?

It is owned by the State Highway Agency.