US Bridges

Cross ST over Saw Mill Run

Fair

Allegheny County, Pennsylvania · West End Circle · Structure no. 000000000000763

Built
1929
96 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
35 ft
1 main span
Daily traffic
23,221
2024 count
Owner
State
State Highway Agency

About this bridge

Cross ST over Saw Mill Run is a concrete culvert carrying Cross ST over Saw Mill Run in Allegheny County, Pennsylvania. It was built in 1929, so it is 96 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 23,221 vehicles a day, roughly 8% of them trucks, projected to reach 12,206 by 2032. The structure is 35 ft (10.7 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCross ST
CrossesSaw Mill Run
LocationWest End Circle
RouteU.S. Route 19
CountyAllegheny County
StatePennsylvania
Coordinates40.445, -80.03
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 m)
Deck width49 ft (14.8 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,221 (2024)
Projected traffic12,206 by 2032
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$228,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cross ST over Saw Mill Run built?

It was built in 1929, making it 96 years old in 2025.

What condition is Cross ST over Saw Mill 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 June 2024.

How much traffic does Cross ST over Saw Mill Run carry?

About 23,221 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Cross ST over Saw Mill Run?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m) and a deck 49 ft wide.

Who owns Cross ST over Saw Mill Run?

It is owned by the State Highway Agency.