US Bridges

Harlansburg Road over Branch Slippery Rock Cr.

Fair

Lawrence County, Pennsylvania · 1580 North of SR 1012 · Structure no. 000000000022388

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
184
2024 count
Owner
State
State Highway Agency

About this bridge

Harlansburg Road over Branch Slippery Rock Cr. is a concrete slab carrying Harlansburg Road over Branch Slippery Rock Cr. in Lawrence County, Pennsylvania. It was built in 1961, so it is 64 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 184 vehicles a day, roughly 4% of them trucks, projected to reach 275 by 2032. The structure is 26 ft (7.9 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesHarlansburg Road
CrossesBranch Slippery Rock Cr.
Location1580 North of SR 1012
RouteState Highway 0
CountyLawrence County
StatePennsylvania
Coordinates40.99521, -80.18986
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width37 ft (11.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2024)
Projected traffic275 by 2032
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Harlansburg Road over Branch Slippery Rock Cr. built?

It was built in 1961, making it 64 years old in 2025.

What condition is Harlansburg Road over Branch Slippery Rock Cr. 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 August 2024.

How much traffic does Harlansburg Road over Branch Slippery Rock Cr. carry?

About 184 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Harlansburg Road over Branch Slippery Rock Cr.?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 37 ft wide.

Who owns Harlansburg Road over Branch Slippery Rock Cr.?

It is owned by the State Highway Agency.