US Bridges

SR 18 over Rock Creek

Fair

Seneca County, Ohio · 0.16 Mi. West of SR 100 · Structure no. 7400691

Built
1929
96 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Concrete
Length
55 ft
1 main span
Daily traffic
6,253
2015 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Rock Creek is a concrete arch - deck carrying SR 18 over Rock Creek in Seneca County, Ohio. It was built in 1929, so it is 96 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 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 6,253 vehicles a day, roughly 6% of them trucks, projected to reach 8,679 by 2035. The structure is 55 ft (16.8 m) long and 67 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 18
CrossesRock Creek
Location0.16 Mi. West of SR 100
RouteState Highway 18
CountySeneca County
StateOhio
Coordinates41.11486, -83.1732
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating42.9 US tons
Inventory rating25 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length55 ft (16.8 m)
Longest span55 ft (16.8 m)
Deck width67 ft (20.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,253 (2015)
Projected traffic8,679 by 2035
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Rock Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is SR 18 over 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 April 2024.

How much traffic does SR 18 over Rock Creek carry?

About 6,253 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is SR 18 over Rock Creek?

The structure is 55 ft (16.8 m) long with a longest span of 55 ft (16.8 m) and a deck 67 ft wide.

Who owns SR 18 over Rock Creek?

It is owned by the State Highway Agency.