US Bridges

SR 18 over Over Conneaut Creek Trib

Poor

Crawford County, Pennsylvania · Summerhill Township · Structure no. 000000000012931

Built
1979
46 years old
Condition
Poor
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
1,568
2024 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Over Conneaut Creek Trib is a prestressed concrete box beam or girders - multiple carrying SR 18 over Over Conneaut Creek Trib in Crawford County, Pennsylvania. It was built in 1979, so it is 46 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,568 vehicles a day, roughly 11% of them trucks, projected to reach 2,743 by 2032. The structure is 45 ft (13.7 m) long and 41 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR 18
CrossesOver Conneaut Creek Trib
LocationSummerhill Township
RouteState Highway 18
CountyCrawford County
StatePennsylvania
Coordinates41.74975, -80.36034
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating47 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,568 (2024)
Projected traffic2,743 by 2032
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 SR 18 over Over Conneaut Creek Trib built?

It was built in 1979, making it 46 years old in 2025.

What condition is SR 18 over Over Conneaut Creek Trib in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does SR 18 over Over Conneaut Creek Trib carry?

About 1,568 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is SR 18 over Over Conneaut Creek Trib?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 41 ft wide.

Who owns SR 18 over Over Conneaut Creek Trib?

It is owned by the State Highway Agency.