US Bridges

Mill Street over Tunungwant Creek

Fair

McKean County, Pennsylvania · 575 Ft NW of Main ST · Structure no. 000000000041296

Built
2001
24 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
184 ft
3 main spans
Daily traffic
1,360
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mill Street over Tunungwant Creek is a prestressed concrete continuous box beam or girders - multiple carrying Mill Street over Tunungwant Creek in McKean 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 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 1,360 vehicles a day, roughly 10% of them trucks, projected to reach 1,680 by 2038. The structure is 184 ft (56.1 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMill Street
CrossesTunungwant Creek
Location575 Ft NW of Main ST
RouteCity Street 0
Coordinates41.96244, -78.63624
Functional classUrban 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
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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.1 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length184 ft (56.1 m)
Longest span60 ft (18.3 m)
Deck width39 ft (11.9 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,360 (2018)
Projected traffic1,680 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mill Street over Tunungwant Creek built?

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

What condition is Mill Street over Tunungwant 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 August 2024.

How much traffic does Mill Street over Tunungwant Creek carry?

About 1,360 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Mill Street over Tunungwant Creek?

The structure is 184 ft (56.1 m) long with a longest span of 60 ft (18.3 m) and a deck 39 ft wide.

Who owns Mill Street over Tunungwant Creek?

It is owned by the City or Municipal Highway Agency.