US Bridges

SR 18 over Trib. of Vermilion River

Good

Huron County, Ohio · 4.89 MI E SR601 · Structure no. 3900347

Built
1997
28 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
2,938
2015 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Trib. of Vermilion River is a prestressed concrete box beam or girders - multiple carrying SR 18 over Trib. of Vermilion River in Huron County, Ohio. It was built in 1997, so it is 28 years old, younger than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,938 vehicles a day, roughly 20% of them trucks, projected to reach 4,078 by 2035. The structure is 42 ft (12.8 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 18
CrossesTrib. of Vermilion River
Location4.89 MI E SR601
RouteState Highway 18
CountyHuron County
StateOhio
Coordinates41.2033, -82.45669
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating51.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width45 ft (13.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,938 (2015)
Projected traffic4,078 by 2035
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 over Trib. of Vermilion River built?

It was built in 1997, making it 28 years old in 2025.

What condition is SR 18 over Trib. of Vermilion River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does SR 18 over Trib. of Vermilion River carry?

About 2,938 vehicles per day (2015 count), of which roughly 20% are trucks.

How long is SR 18 over Trib. of Vermilion River?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 45 ft wide.

Who owns SR 18 over Trib. of Vermilion River?

It is owned by the State Highway Agency.