US Bridges

SR 0711 over Mill Creek

Fair

Westmoreland County, Pennsylvania · Ligonier Township · Structure no. 000000000036249

Built
1955
70 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
2 main spans
Daily traffic
10,522
2024 count
Owner
State
State Highway Agency

About this bridge

SR 0711 over Mill Creek is a steel stringer/multi-beam or girder carrying SR 0711 over Mill Creek in Westmoreland County, Pennsylvania. It was built in 1955, so it is 70 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 10,522 vehicles a day, roughly 10% of them trucks, projected to reach 13,063 by 2032. The structure is 79 ft (24.1 m) long and 46 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesSR 0711
CrossesMill Creek
LocationLigonier Township
RouteState Highway 711
CountyWestmoreland County
StatePennsylvania
Coordinates40.25536, -79.21119
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating48 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span38 ft (11.6 m)
Deck width46 ft (13.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,522 (2024)
Projected traffic13,063 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$430,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 0711 over Mill Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 0711 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 SR 0711 over Mill Creek carry?

About 10,522 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SR 0711 over Mill Creek?

The structure is 79 ft (24.1 m) long with a longest span of 38 ft (11.6 m) and a deck 46 ft wide.

Who owns SR 0711 over Mill Creek?

It is owned by the State Highway Agency.