US Bridges

Clinton Ave over N. Br. of Robinson Run

Poor

Allegheny County, Pennsylvania · 2000N.W.OF SR 3048 · Structure no. 000000000001350

Built
1942
83 years old, rebuilt 1985
Condition
Poor
inspected October 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
116 ft
2 main spans
Daily traffic
10,401
2024 count
Owner
State
State Highway Agency

About this bridge

Clinton Ave over N. Br. of Robinson Run is a steel stringer/multi-beam or girder carrying Clinton Ave over N. Br. of Robinson Run in Allegheny County, Pennsylvania. It was built in 1942 and reconstructed in 1985, so it is 83 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10,401 vehicles a day, roughly 5% of them trucks, projected to reach 13,883 by 2032. The structure is 116 ft (35.4 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesClinton Ave
CrossesN. Br. of Robinson Run
Location2000N.W.OF SR 3048
RouteState Highway 978
Coordinates40.40189, -80.18869
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating66 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span56 ft (17.1 m)
Deck width37 ft (11.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,401 (2024)
Projected traffic13,883 by 2032
Trucks5%
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

OwnerState Highway Agency
Maintained byState 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$260,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Clinton Ave over N. Br. of Robinson Run built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1985.

What condition is Clinton Ave over N. Br. of Robinson Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2022.

How much traffic does Clinton Ave over N. Br. of Robinson Run carry?

About 10,401 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Clinton Ave over N. Br. of Robinson Run?

The structure is 116 ft (35.4 m) long with a longest span of 56 ft (17.1 m) and a deck 37 ft wide.

Who owns Clinton Ave over N. Br. of Robinson Run?

It is owned by the State Highway Agency.