US Bridges

Tenth Street Br over I-376 and CSX RR

Fair

Allegheny County, Pennsylvania · MA11 South 10th ST Brdg · Structure no. 000000000002388

Built
1933
92 years old, rebuilt 1994
Condition
Fair
inspected April 2023
Type
Suspension
Steel
Length
1,275 ft
3 main spans
Daily traffic
18,372
2005 count
Owner
County
County Highway Agency

About this bridge

Tenth Street Br over I-376 and CSX RR is a steel suspension carrying Tenth Street Br over I-376 and CSX RR in Allegheny County, Pennsylvania. It was built in 1933 and reconstructed in 1994, 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 6 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 18,372 vehicles a day, roughly 9% of them trucks, projected to reach 25,100 by 2030. The structure is 1,275 ft (388.6 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesTenth Street Br
CrossesI-376 and CSX RR
LocationMA11 South 10th ST Brdg
RouteCounty Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.43274, -79.98931
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeSuspension
MaterialSteel
DeckClosed grating
Main spans3
Design loadHS 25 or greater
Structure length1,275 ft (388.6 m)
Longest span725 ft (221 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck27 ft (8.3 m)

Traffic and service

Average daily traffic18,372 (2005)
Projected traffic25,100 by 2030
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Tenth Street Br over I-376 and CSX RR built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1994.

What condition is Tenth Street Br over I-376 and CSX RR 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 2023.

How much traffic does Tenth Street Br over I-376 and CSX RR carry?

About 18,372 vehicles per day (2005 count), of which roughly 9% are trucks.

How long is Tenth Street Br over I-376 and CSX RR?

The structure is 1,275 ft (388.6 m) long with a longest span of 725 ft (221 m) and a deck 42 ft wide.

Who owns Tenth Street Br over I-376 and CSX RR?

It is owned by the County Highway Agency.