US Bridges

SR 18 over Royer Ditch

Fair

Seneca County, Ohio · 8.55 Mi. North of SR 163 · Structure no. 7400934

Built
1961
64 years old, rebuilt 2016
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
1,987
2015 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Royer Ditch is a steel stringer/multi-beam or girder carrying SR 18 over Royer Ditch in Seneca County, Ohio. It was built in 1961 and reconstructed in 2016, so it is 64 years old, older than the Ohio average of 47.3 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 1,987 vehicles a day, roughly 12% of them trucks, projected to reach 2,758 by 2035. The structure is 56 ft (17.2 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 18
CrossesRoyer Ditch
Location8.55 Mi. North of SR 163
RouteState Highway 18
CountySeneca County
StateOhio
Coordinates41.22078, -82.91873
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length56 ft (17.2 m)
Longest span47 ft (14.2 m)
Deck width44 ft (13.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,987 (2015)
Projected traffic2,758 by 2035
Trucks12%
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 SR 18 over Royer Ditch built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2016.

What condition is SR 18 over Royer Ditch 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 April 2024.

How much traffic does SR 18 over Royer Ditch carry?

About 1,987 vehicles per day (2015 count), of which roughly 12% are trucks.

How long is SR 18 over Royer Ditch?

The structure is 56 ft (17.2 m) long with a longest span of 47 ft (14.2 m) and a deck 44 ft wide.

Who owns SR 18 over Royer Ditch?

It is owned by the State Highway Agency.