US Bridges

South Millvale Av over N-S RR E Busway Gross ST

Fair

Allegheny County, Pennsylvania · 101 S Millvale Ave Bridge · Structure no. 000000000002452

Built
1927
98 years old, rebuilt 2007
Condition
Fair
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
460 ft
7 main spans
Daily traffic
5,525
2006 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Millvale Av over N-S RR E Busway Gross ST is a steel girder and floorbeam system carrying South Millvale Av over N-S RR E Busway Gross ST in Allegheny County, Pennsylvania. It was built in 1927 and reconstructed in 2007, so it is 98 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 5,525 vehicles a day, roughly 6% of them trucks, projected to reach 7,000 by 2026. The structure is 460 ft (140.2 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSouth Millvale Av
CrossesN-S RR E Busway Gross ST
Location101 S Millvale Ave Bridge
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.45702, -79.94761
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans7 (+2 approach)
Design loadHS 25 or greater
Structure length460 ft (140.2 m)
Longest span90 ft (27.4 m)
Deck width56 ft (17.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,525 (2006)
Projected traffic7,000 by 2026
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was South Millvale Av over N-S RR E Busway Gross ST built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2007.

What condition is South Millvale Av over N-S RR E Busway Gross ST 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 March 2024.

How much traffic does South Millvale Av over N-S RR E Busway Gross ST carry?

About 5,525 vehicles per day (2006 count), of which roughly 6% are trucks.

How long is South Millvale Av over N-S RR E Busway Gross ST?

The structure is 460 ft (140.2 m) long with a longest span of 90 ft (27.4 m) and a deck 56 ft wide.

Who owns South Millvale Av over N-S RR E Busway Gross ST?

It is owned by the City or Municipal Highway Agency.