US Bridges

SR 0048 Walnut ST over Long Run

Fair

Allegheny County, Pennsylvania · 0.1 MI S of SR 0048 · Structure no. 000000000000685

Built
1934
91 years old, rebuilt 1963
Condition
Fair
inspected March 2023
Type
Culvert
Masonry
Length
25 ft
1 main span
Daily traffic
8,278
2023 count
Owner
State
State Highway Agency

About this bridge

SR 0048 Walnut ST over Long Run is a masonry culvert carrying SR 0048 Walnut ST over Long Run in Allegheny County, Pennsylvania. It was built in 1934 and reconstructed in 1963, so it is 91 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 8,278 vehicles a day, roughly 5% of them trucks, projected to reach 15,443 by 2032. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 0048 Walnut ST
CrossesLong Run
Location0.1 MI S of SR 0048
RouteState Highway 48
CountyAllegheny County
StatePennsylvania
Coordinates40.32347, -79.8388
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
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 inspectionMarch 2023
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
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
MaterialMasonry
DeckNot applicable
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,278 (2023)
Projected traffic15,443 by 2032
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$174,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 0048 Walnut ST over Long Run built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1963.

What condition is SR 0048 Walnut ST over Long 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 March 2023.

How much traffic does SR 0048 Walnut ST over Long Run carry?

About 8,278 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 0048 Walnut ST over Long Run?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m).

Who owns SR 0048 Walnut ST over Long Run?

It is owned by the State Highway Agency.