US Bridges

SR-66 over Six Mile Creek

Fair

Auglaize County, Ohio · 2.16 Mi.S. of Jct. SR-197 · Structure no. 0601233

Built
1962
63 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
107 ft
3 main spans
Daily traffic
3,107
2015 count
Owner
State
State Highway Agency

About this bridge

SR-66 over Six Mile Creek is a concrete continuous slab carrying SR-66 over Six Mile Creek in Auglaize County, Ohio. It was built in 1962, so it is 63 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 3,107 vehicles a day, roughly 9% of them trucks, projected to reach 4,313 by 2035. The structure is 107 ft (32.6 m) long and 40 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSR-66
CrossesSix Mile Creek
Location2.16 Mi.S. of Jct. SR-197
RouteState Highway 66
CountyAuglaize County
StateOhio
Coordinates40.62614, -84.34736
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length107 ft (32.6 m)
Longest span40 ft (12.2 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,107 (2015)
Projected traffic4,313 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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-66 over Six Mile Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is SR-66 over Six Mile 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 June 2024.

How much traffic does SR-66 over Six Mile Creek carry?

About 3,107 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is SR-66 over Six Mile Creek?

The structure is 107 ft (32.6 m) long with a longest span of 40 ft (12.2 m) and a deck 40 ft wide.

Who owns SR-66 over Six Mile Creek?

It is owned by the State Highway Agency.