US Bridges

SR 18 Conneaut Lk. over Over Little Shenango R

Fair

Mercer County, Pennsylvania · Sugar Grove Township · Structure no. 000000000025639

Built
1984
41 years old
Condition
Fair
inspected December 2023
Type
Culvert
Steel
Length
26 ft
1 main span
Daily traffic
2,275
2024 count
Owner
State
State Highway Agency

About this bridge

SR 18 Conneaut Lk. over Over Little Shenango R is a steel culvert carrying SR 18 Conneaut Lk. over Over Little Shenango R in Mercer County, Pennsylvania. It was built in 1984, so it is 41 years old, younger 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 2,275 vehicles a day, roughly 10% of them trucks, projected to reach 3,155 by 2032. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 18 Conneaut Lk.
CrossesOver Little Shenango R
LocationSugar Grove Township
RouteState Highway 18
CountyMercer County
StatePennsylvania
Coordinates41.44036, -80.37182
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,275 (2024)
Projected traffic3,155 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$91,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 18 Conneaut Lk. over Over Little Shenango R built?

It was built in 1984, making it 41 years old in 2025.

What condition is SR 18 Conneaut Lk. over Over Little Shenango R 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 December 2023.

How much traffic does SR 18 Conneaut Lk. over Over Little Shenango R carry?

About 2,275 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SR 18 Conneaut Lk. over Over Little Shenango R?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m).

Who owns SR 18 Conneaut Lk. over Over Little Shenango R?

It is owned by the State Highway Agency.