US Bridges

CR 312 (22/A) over Tiffin River

Good

Williams County, Ohio · 01220 RD 22/A · Structure no. 8630585

Built
1996
29 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
208 ft
4 main spans
Daily traffic
707
2015 count
Owner
County
County Highway Agency

About this bridge

CR 312 (22/A) over Tiffin River is a prestressed concrete box beam or girders - multiple carrying CR 312 (22/A) over Tiffin River in Williams County, Ohio. It was built in 1996, so it is 29 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 707 vehicles a day, roughly 7% of them trucks, projected to reach 981 by 2035. The structure is 208 ft (63.4 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCR 312 (22/A)
CrossesTiffin River
Location01220 RD 22/A
RouteCounty Highway C0312
CountyWilliams County
StateOhio
Coordinates41.43119, -84.40117
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans4
Design loadHS 20 + Mod
Structure length208 ft (63.4 m)
Longest span51 ft (15.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic707 (2015)
Projected traffic981 by 2035
Trucks7%
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

OwnerCounty Highway Agency
Maintained byCounty 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 CR 312 (22/A) over Tiffin River built?

It was built in 1996, making it 29 years old in 2025.

What condition is CR 312 (22/A) over Tiffin 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 October 2024.

How much traffic does CR 312 (22/A) over Tiffin River carry?

About 707 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is CR 312 (22/A) over Tiffin River?

The structure is 208 ft (63.4 m) long with a longest span of 51 ft (15.4 m) and a deck 30 ft wide.

Who owns CR 312 (22/A) over Tiffin River?

It is owned by the County Highway Agency.