US Bridges

Gibsonia RD over Cedar Run

Fair

Allegheny County, Pennsylvania · 150N.W.CEDAR Run Rd. · Structure no. 000000000001340

Built
1955
70 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
6,027
2024 count
Owner
State
State Highway Agency

About this bridge

Gibsonia RD over Cedar Run is a steel stringer/multi-beam or girder carrying Gibsonia RD over Cedar Run in Allegheny County, Pennsylvania. It was built in 1955, so it is 70 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 6,027 vehicles a day, roughly 5% of them trucks, projected to reach 6,975 by 2032. The structure is 31 ft (9.4 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesGibsonia RD
CrossesCedar Run
Location150N.W.CEDAR Run Rd.
RouteState Highway 910
CountyAllegheny County
StatePennsylvania
Coordinates40.58853, -79.88617
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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span26 ft (7.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,027 (2024)
Projected traffic6,975 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$149,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gibsonia RD over Cedar Run built?

It was built in 1955, making it 70 years old in 2025.

What condition is Gibsonia RD over Cedar 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 October 2023.

How much traffic does Gibsonia RD over Cedar Run carry?

About 6,027 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Gibsonia RD over Cedar Run?

The structure is 31 ft (9.4 m) long with a longest span of 26 ft (7.9 m) and a deck 35 ft wide.

Who owns Gibsonia RD over Cedar Run?

It is owned by the State Highway Agency.