US Bridges

Long Hollow RD over Gillespie Run

Fair

Allegheny County, Pennsylvania · 1 Mi.North of SR0136 · Structure no. 000000000001512

Built
1962
63 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
1,747
2024 count
Owner
State
State Highway Agency

About this bridge

Long Hollow RD over Gillespie Run is a concrete slab carrying Long Hollow RD over Gillespie Run in Allegheny County, Pennsylvania. It was built in 1962, so it is 63 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 1,747 vehicles a day, roughly 6% of them trucks, projected to reach 1,236 by 2032. The structure is 23 ft (7 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLong Hollow RD
CrossesGillespie Run
Location1 Mi.North of SR0136
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.22806, -79.8214
Functional classUrban Collector

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 inspectionJanuary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width38 ft (11.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,747 (2024)
Projected traffic1,236 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$44,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Long Hollow RD over Gillespie Run built?

It was built in 1962, making it 63 years old in 2025.

What condition is Long Hollow RD over Gillespie 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 January 2024.

How much traffic does Long Hollow RD over Gillespie Run carry?

About 1,747 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Long Hollow RD over Gillespie Run?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 38 ft wide.

Who owns Long Hollow RD over Gillespie Run?

It is owned by the State Highway Agency.