US Bridges

T-571 Millcreek RD over Mill Creek

FairPosted for load

Clarion County, Pennsylvania · 2.02 MI N Int W/ SR 1011 · Structure no. 000000000011149

Built
1959
66 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

T-571 Millcreek RD over Mill Creek is a steel stringer/multi-beam or girder carrying T-571 Millcreek RD over Mill Creek in Clarion County, Pennsylvania. It was built in 1959, so it is 66 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. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 1% of them trucks, projected to reach 310 by 2044. The structure is 72 ft (21.9 m) long and 20 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesT-571 Millcreek RD
CrossesMill Creek
Location2.02 MI N Int W/ SR 1011
RouteCity Street 0
Coordinates41.23452, -79.32116
Functional classRural 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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29 US tons
Inventory rating17 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width20 ft (6.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic310 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$280,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-571 Millcreek RD over Mill Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is T-571 Millcreek RD over Mill 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 June 2023.

How much traffic does T-571 Millcreek RD over Mill Creek carry?

About 200 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is T-571 Millcreek RD over Mill Creek?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 20 ft wide.

Who owns T-571 Millcreek RD over Mill Creek?

It is owned by the County Highway Agency.