US Bridges

School Street over Marsh Run

Fair

Indiana County, Pennsylvania · Btw S 4th & S Coulter Ave · Structure no. 000000000019528

Built
1961
64 years old
Condition
Fair
inspected April 2024
Type
Slab
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
450
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

School Street over Marsh Run is a prestressed concrete slab carrying School Street over Marsh Run in Indiana County, Pennsylvania. It was built in 1961, so it is 64 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 450 vehicles a day, roughly 10% of them trucks, projected to reach 630 by 2044. The structure is 22 ft (6.7 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSchool Street
CrossesMarsh Run
LocationBtw S 4th & S Coulter Ave
RouteCity Street 0
Coordinates40.62053, -79.14599
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width52 ft (15.9 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2024)
Projected traffic630 by 2044
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 School Street over Marsh Run built?

It was built in 1961, making it 64 years old in 2025.

What condition is School Street over Marsh 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 April 2024.

How much traffic does School Street over Marsh Run carry?

About 450 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is School Street over Marsh Run?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 52 ft wide.

Who owns School Street over Marsh Run?

It is owned by the City or Municipal Highway Agency.