US Bridges

SR 81 over Six Mile Creek

Good

Allen County, Ohio · SR81 1/2MI E JCT SR 66 · Structure no. 0203130

Built
2000
25 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
619
2015 count
Owner
State
State Highway Agency

About this bridge

SR 81 over Six Mile Creek is a prestressed concrete box beam or girders - multiple carrying SR 81 over Six Mile Creek in Allen County, Ohio. It was built in 2000, so it is 25 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 619 vehicles a day, roughly 7% of them trucks, projected to reach 859 by 2035. The structure is 54 ft (16.4 m) long and 40 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSR 81
CrossesSix Mile Creek
LocationSR81 1/2MI E JCT SR 66
RouteState Highway 81
StateOhio
Coordinates40.73608, -84.32346
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length54 ft (16.4 m)
Longest span51 ft (15.5 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic619 (2015)
Projected traffic859 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 81 over Six Mile Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is SR 81 over Six Mile Creek 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 September 2023.

How much traffic does SR 81 over Six Mile Creek carry?

About 619 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is SR 81 over Six Mile Creek?

The structure is 54 ft (16.4 m) long with a longest span of 51 ft (15.5 m) and a deck 40 ft wide.

Who owns SR 81 over Six Mile Creek?

It is owned by the State Highway Agency.