US Bridges

Fourth Av over Bull Creek

Fair

Allegheny County, Pennsylvania · 464002 200 W of Ross ST · Structure no. 000000000002688

Built
1970
55 years old, rebuilt 2017
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
3,000
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fourth Av over Bull Creek is a steel stringer/multi-beam or girder carrying Fourth Av over Bull Creek in Allegheny County, Pennsylvania. It was built in 1970 and reconstructed in 2017, so it is 55 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 3,000 vehicles a day, roughly 5% of them trucks, projected to reach 3,500 by 2041. The structure is 65 ft (19.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFourth Av
CrossesBull Creek
Location464002 200 W of Ross ST
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.60018, -79.75745
Functional classUrban Minor Arterial

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating62.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length65 ft (19.8 m)
Longest span60 ft (18.3 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2021)
Projected traffic3,500 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$306,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fourth Av over Bull Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2017.

What condition is Fourth Av over Bull Creek 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 October 2023.

How much traffic does Fourth Av over Bull Creek carry?

About 3,000 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Fourth Av over Bull Creek?

The structure is 65 ft (19.8 m) long with a longest span of 60 ft (18.3 m) and a deck 45 ft wide.

Who owns Fourth Av over Bull Creek?

It is owned by the City or Municipal Highway Agency.