US Bridges

SR 0356 over Allegheny River NS RR

Fair

Westmoreland County, Pennsylvania · Freeport Bridge · Structure no. 000000000048537

Built
1962
63 years old, rebuilt 2013
Condition
Fair
inspected March 2024
Type
Truss - Deck
Steel Continuous
Length
2,444 ft
3 main spans
Daily traffic
15,249
2024 count
Owner
State
State Highway Agency

About this bridge

SR 0356 over Allegheny River NS RR is a steel continuous truss - deck carrying SR 0356 over Allegheny River NS RR in Westmoreland County, Pennsylvania. It was built in 1962 and reconstructed in 2013, so it is 63 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 15,249 vehicles a day, roughly 11% of them trucks, projected to reach 15,200 by 2036. The structure is 2,444 ft (744.9 m) long and 67 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesSR 0356
CrossesAllegheny River NS RR
LocationFreeport Bridge
RouteState Highway 356
CountyWestmoreland County
StatePennsylvania
Coordinates40.66606, -79.6903
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating48 US tons

Structure

Structure typeTruss - Deck
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+9 approach)
Design loadHS 20
Structure length2,444 ft (744.9 m)
Longest span452 ft (137.8 m)
Deck width67 ft (20.4 m)
Roadway width54 ft (16.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,249 (2024)
Projected traffic15,200 by 2036
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 0356 over Allegheny River NS RR built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2013.

What condition is SR 0356 over Allegheny River NS 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 March 2024.

How much traffic does SR 0356 over Allegheny River NS RR carry?

About 15,249 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is SR 0356 over Allegheny River NS RR?

The structure is 2,444 ft (744.9 m) long with a longest span of 452 ft (137.8 m) and a deck 67 ft wide.

Who owns SR 0356 over Allegheny River NS RR?

It is owned by the State Highway Agency.