US Bridges

Rt 0008 NB SB over Gourdhead Run

Good

Allegheny County, Pennsylvania · .5 Mi. South of SR 1010 · Structure no. 000000000000502

Built
1931
94 years old, rebuilt 2010
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
21,896
2024 count
Owner
State
State Highway Agency

About this bridge

Rt 0008 NB SB over Gourdhead Run is a steel stringer/multi-beam or girder carrying Rt 0008 NB SB over Gourdhead Run in Allegheny County, Pennsylvania. It was built in 1931 and reconstructed in 2010, so it is 94 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 21,896 vehicles a day, roughly 4% of them trucks, projected to reach 17,164 by 2032. The structure is 46 ft (14 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRt 0008 NB SB
CrossesGourdhead Run
Location.5 Mi. South of SR 1010
RouteState Highway 8
CountyAllegheny County
StatePennsylvania
Coordinates40.56424, -79.95786
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating85 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,896 (2024)
Projected traffic17,164 by 2032
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$697,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt 0008 NB SB over Gourdhead Run built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2010.

What condition is Rt 0008 NB SB over Gourdhead Run 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 October 2023.

How much traffic does Rt 0008 NB SB over Gourdhead Run carry?

About 21,896 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Rt 0008 NB SB over Gourdhead Run?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 63 ft wide.

Who owns Rt 0008 NB SB over Gourdhead Run?

It is owned by the State Highway Agency.