US Bridges

Chestnut ST over Lr 763 906+78

Fair

Allegheny County, Pennsylvania · Chestnut O/Parkway East · Structure no. 000000000001177

Built
1950
75 years old, rebuilt 2008
Condition
Fair
inspected July 2023
Type
Frame
Concrete
Length
72 ft
1 main span
Daily traffic
230
2024 count
Owner
State
State Highway Agency

About this bridge

Chestnut ST over Lr 763 906+78 is a concrete frame carrying Chestnut ST over Lr 763 906+78 in Allegheny County, Pennsylvania. It was built in 1950 and reconstructed in 2008, so it is 75 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 230 vehicles a day, roughly 2% of them trucks, projected to reach 394 by 2032. The structure is 72 ft (21.9 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesChestnut ST
CrossesLr 763 906+78
LocationChestnut O/Parkway East
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.42833, -79.88333
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span72 ft (21.9 m)
Deck width40 ft (12.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2024)
Projected traffic394 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$211,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Chestnut ST over Lr 763 906+78 built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2008.

What condition is Chestnut ST over Lr 763 906+78 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 July 2023.

How much traffic does Chestnut ST over Lr 763 906+78 carry?

About 230 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Chestnut ST over Lr 763 906+78?

The structure is 72 ft (21.9 m) long with a longest span of 72 ft (21.9 m) and a deck 40 ft wide.

Who owns Chestnut ST over Lr 763 906+78?

It is owned by the State Highway Agency.