US Bridges

Market ST over I-376(WB) Fort Pitt Blvd

Fair

Allegheny County, Pennsylvania · 121 Market ST Bridge · Structure no. 000000000002464

Built
1940
85 years old, rebuilt 2002
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
2,824
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Market ST over I-376(WB) Fort Pitt Blvd is a steel stringer/multi-beam or girder carrying Market ST over I-376(WB) Fort Pitt Blvd in Allegheny County, Pennsylvania. It was built in 1940 and reconstructed in 2002, so it is 85 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 2,824 vehicles a day, roughly 6% of them trucks, projected to reach 4,000 by 2039. The structure is 73 ft (22.3 m) long and 78 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMarket ST
CrossesI-376(WB) Fort Pitt Blvd
Location121 Market ST Bridge
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.43794, -80.00443
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 inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating77.1 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span68 ft (20.7 m)
Deck width78 ft (23.8 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,824 (2022)
Projected traffic4,000 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Market ST over I-376(WB) Fort Pitt Blvd built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2002.

What condition is Market ST over I-376(WB) Fort Pitt Blvd 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 December 2022.

How much traffic does Market ST over I-376(WB) Fort Pitt Blvd carry?

About 2,824 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Market ST over I-376(WB) Fort Pitt Blvd?

The structure is 73 ft (22.3 m) long with a longest span of 68 ft (20.7 m) and a deck 78 ft wide.

Who owns Market ST over I-376(WB) Fort Pitt Blvd?

It is owned by the City or Municipal Highway Agency.