US Bridges

Ramp ST over Streets Run

Fair

Allegheny County, Pennsylvania · SZ02 Streets Run #2 · Structure no. 000000000002391

Built
1981
44 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
4,398
2024 count
Owner
County
County Highway Agency

About this bridge

Ramp ST over Streets Run is a prestressed concrete box beam or girders - multiple carrying Ramp ST over Streets Run in Allegheny County, Pennsylvania. It was built in 1981, so it is 44 years old, younger 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 4,398 vehicles a day, roughly 13% of them trucks, projected to reach 15,000 by 2028. The structure is 34 ft (10.4 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRamp ST
CrossesStreets Run
LocationSZ02 Streets Run #2
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.38668, -79.93234
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width37 ft (11.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,398 (2024)
Projected traffic15,000 by 2028
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ramp ST over Streets Run built?

It was built in 1981, making it 44 years old in 2025.

What condition is Ramp ST over Streets Run 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 August 2024.

How much traffic does Ramp ST over Streets Run carry?

About 4,398 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Ramp ST over Streets Run?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 37 ft wide.

Who owns Ramp ST over Streets Run?

It is owned by the County Highway Agency.