US Bridges

Larimer Av over Allegheny Valley RR

Fair

Allegheny County, Pennsylvania · 130 Larimer Ave over Avrr · Structure no. 000000000002468

Built
1904
121 years old, rebuilt 1989
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
124 ft
1 main span
Daily traffic
8,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Larimer Av over Allegheny Valley RR is a steel stringer/multi-beam or girder carrying Larimer Av over Allegheny Valley RR in Allegheny County, Pennsylvania. It was built in 1904 and reconstructed in 1989, so it is 121 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 8,000 vehicles a day, roughly 5% of them trucks, projected to reach 8,800 by 2043. The structure is 124 ft (37.8 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLarimer Av
CrossesAllegheny Valley RR
Location130 Larimer Ave over Avrr
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.46775, -79.90768
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109 US tons
Inventory rating65 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length124 ft (37.8 m)
Longest span119 ft (36.3 m)
Deck width44 ft (13.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2023)
Projected traffic8,800 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$35,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Larimer Av over Allegheny Valley RR built?

It was built in 1904, making it 121 years old in 2025. It was reconstructed in 1989.

What condition is Larimer Av over Allegheny Valley 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 August 2023.

How much traffic does Larimer Av over Allegheny Valley RR carry?

About 8,000 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Larimer Av over Allegheny Valley RR?

The structure is 124 ft (37.8 m) long with a longest span of 119 ft (36.3 m) and a deck 44 ft wide.

Who owns Larimer Av over Allegheny Valley RR?

It is owned by the City or Municipal Highway Agency.