US Bridges

Big Sewickley C RD over Br.Big Sewickley Creek

Good

Allegheny County, Pennsylvania · @ Intersection W/Sr 4040 · Structure no. 000000000001988

Built
1926
99 years old, rebuilt 2009
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
7,470
2024 count
Owner
State
State Highway Agency

About this bridge

Big Sewickley C RD over Br.Big Sewickley Creek is a concrete slab carrying Big Sewickley C RD over Br.Big Sewickley Creek in Allegheny County, Pennsylvania. It was built in 1926 and reconstructed in 2009, so it is 99 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,470 vehicles a day, roughly 3% of them trucks, projected to reach 5,590 by 2032. The structure is 23 ft (7 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesBig Sewickley C RD
CrossesBr.Big Sewickley Creek
Location@ Intersection W/Sr 4040
RouteState Highway 0
Coordinates40.6075, -80.13245
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,470 (2024)
Projected traffic5,590 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$260,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Big Sewickley C RD over Br.Big Sewickley Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 2009.

What condition is Big Sewickley C RD over Br.Big Sewickley Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does Big Sewickley C RD over Br.Big Sewickley Creek carry?

About 7,470 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Big Sewickley C RD over Br.Big Sewickley Creek?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns Big Sewickley C RD over Br.Big Sewickley Creek?

It is owned by the State Highway Agency.