US Bridges

SR 28 Nb-Sb over SR 8046 Ramp a

Good

Allegheny County, Pennsylvania · Millvale over Ramp a · Structure no. 000000000000584

Built
1963
62 years old, rebuilt 2012
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
79,106
2024 count
Owner
State
State Highway Agency

About this bridge

SR 28 Nb-Sb over SR 8046 Ramp a is a steel stringer/multi-beam or girder carrying SR 28 Nb-Sb over SR 8046 Ramp a in Allegheny County, Pennsylvania. It was built in 1963 and reconstructed in 2012, so it is 62 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 79,106 vehicles a day, roughly 8% of them trucks, projected to reach 66,686 by 2032. The structure is 60 ft (18.3 m) long and 77 ft wide.

Location

Open in Google Maps
CarriesSR 28 Nb-Sb
CrossesSR 8046 Ramp a
LocationMillvale over Ramp a
RouteState Highway 28
CountyAllegheny County
StatePennsylvania
Coordinates40.47859, -79.96727
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span56 ft (17.1 m)
Deck width77 ft (23.4 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79,106 (2024)
Projected traffic66,686 by 2032
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 28 Nb-Sb over SR 8046 Ramp a built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2012.

What condition is SR 28 Nb-Sb over SR 8046 Ramp a 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 April 2024.

How much traffic does SR 28 Nb-Sb over SR 8046 Ramp a carry?

About 79,106 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR 28 Nb-Sb over SR 8046 Ramp a?

The structure is 60 ft (18.3 m) long with a longest span of 56 ft (17.1 m) and a deck 77 ft wide.

Who owns SR 28 Nb-Sb over SR 8046 Ramp a?

It is owned by the State Highway Agency.