US Bridges

Walton Rd. over Lobbs Run

Fair

Allegheny County, Pennsylvania · 0.5 Mi. N.W. of SR 0837 · Structure no. 000000000001731

Built
1925
100 years old
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
30 ft
1 main span
Daily traffic
609
2024 count
Owner
State
State Highway Agency

About this bridge

Walton Rd. over Lobbs Run is a concrete arch - deck carrying Walton Rd. over Lobbs Run in Allegheny County, Pennsylvania. It was built in 1925, so it is 100 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 609 vehicles a day, roughly 2% of them trucks, projected to reach 1,538 by 2038. The structure is 30 ft (9.1 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesWalton Rd.
CrossesLobbs Run
Location0.5 Mi. N.W. of SR 0837
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.2649, -79.92005
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
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic609 (2024)
Projected traffic1,538 by 2038
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$848,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Walton Rd. over Lobbs Run built?

It was built in 1925, making it 100 years old in 2025.

What condition is Walton Rd. over Lobbs 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 November 2023.

How much traffic does Walton Rd. over Lobbs Run carry?

About 609 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Walton Rd. over Lobbs Run?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 25 ft wide.

Who owns Walton Rd. over Lobbs Run?

It is owned by the State Highway Agency.