US Bridges

Mountville RD over Slippery Rock Creek

Fair

Lawrence County, Pennsylvania · 1700 N.E. of SR 2022 · Structure no. 000000000022431

Built
1940
85 years old, rebuilt 2018
Condition
Fair
inspected June 2024
Type
Truss - Thru
Steel
Length
191 ft
1 main span
Daily traffic
179
2024 count
Owner
State
State Highway Agency

About this bridge

Mountville RD over Slippery Rock Creek is a steel truss - thru carrying Mountville RD over Slippery Rock Creek in Lawrence County, Pennsylvania. It was built in 1940 and reconstructed in 2018, so it is 85 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 179 vehicles a day, roughly 2% of them trucks, projected to reach 127 by 2032. The structure is 191 ft (58.2 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMountville RD
CrossesSlippery Rock Creek
Location1700 N.E. of SR 2022
RouteState Highway 0
CountyLawrence County
StatePennsylvania
Coordinates40.91208, -80.2169
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length191 ft (58.2 m)
Longest span186 ft (56.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic179 (2024)
Projected traffic127 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$905,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mountville RD over Slippery Rock Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2018.

What condition is Mountville RD over Slippery Rock 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 June 2024.

How much traffic does Mountville RD over Slippery Rock Creek carry?

About 179 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Mountville RD over Slippery Rock Creek?

The structure is 191 ft (58.2 m) long with a longest span of 186 ft (56.7 m) and a deck 26 ft wide.

Who owns Mountville RD over Slippery Rock Creek?

It is owned by the State Highway Agency.