US Bridges

SR 18 Sharon Road over Over Big Run

Fair

Mercer County, Pennsylvania · West Salem Township · Structure no. 000000000025636

Built
1969
56 years old, rebuilt 1973
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
6,978
2024 count
Owner
State
State Highway Agency

About this bridge

SR 18 Sharon Road over Over Big Run is a prestressed concrete box beam or girders - multiple carrying SR 18 Sharon Road over Over Big Run in Mercer County, Pennsylvania. It was built in 1969 and reconstructed in 1973, so it is 56 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 6,978 vehicles a day, roughly 6% of them trucks, projected to reach 9,576 by 2032. The structure is 62 ft (18.9 m) long and 82 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 18 Sharon Road
CrossesOver Big Run
LocationWest Salem Township
RouteState Highway 18
CountyMercer County
StatePennsylvania
Coordinates41.36455, -80.408
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating28 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span61 ft (18.6 m)
Deck width82 ft (25 m)
Roadway width78 ft (23.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,978 (2024)
Projected traffic9,576 by 2032
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 18 Sharon Road over Over Big Run built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1973.

What condition is SR 18 Sharon Road over Over Big 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 July 2023.

How much traffic does SR 18 Sharon Road over Over Big Run carry?

About 6,978 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is SR 18 Sharon Road over Over Big Run?

The structure is 62 ft (18.9 m) long with a longest span of 61 ft (18.6 m) and a deck 82 ft wide.

Who owns SR 18 Sharon Road over Over Big Run?

It is owned by the State Highway Agency.