US Bridges

SR0056 over Conemaugh River

Fair

Indiana County, Pennsylvania · Seward · Structure no. 000000000018992

Built
1933
92 years old, rebuilt 1980
Condition
Fair
inspected March 2024
Type
Truss - Thru
Steel
Length
377 ft
2 main spans
Daily traffic
6,569
2024 count
Owner
State
State Highway Agency

About this bridge

SR0056 over Conemaugh River is a steel truss - thru carrying SR0056 over Conemaugh River in Indiana County, Pennsylvania. It was built in 1933 and reconstructed in 1980, so it is 92 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 6,569 vehicles a day, roughly 13% of them trucks, projected to reach 6,281 by 2032. The structure is 377 ft (114.9 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR0056
CrossesConemaugh River
LocationSeward
RouteState Highway 56
CountyIndiana County
StatePennsylvania
Coordinates40.41963, -79.02605
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length377 ft (114.9 m)
Longest span183 ft (55.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic6,569 (2024)
Projected traffic6,281 by 2032
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR0056 over Conemaugh River built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1980.

What condition is SR0056 over Conemaugh River 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 March 2024.

How much traffic does SR0056 over Conemaugh River carry?

About 6,569 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is SR0056 over Conemaugh River?

The structure is 377 ft (114.9 m) long with a longest span of 183 ft (55.8 m) and a deck 32 ft wide.

Who owns SR0056 over Conemaugh River?

It is owned by the State Highway Agency.