US Bridges

SR 81 over Auglaize River

Good

Allen County, Ohio · Over Auglaize River · Structure no. 0203157

Built
1959
66 years old, rebuilt 2011
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
160 ft
3 main spans
Daily traffic
619
2015 count
Owner
State
State Highway Agency

About this bridge

SR 81 over Auglaize River is a steel continuous stringer/multi-beam or girder carrying SR 81 over Auglaize River in Allen County, Ohio. It was built in 1959 and reconstructed in 2011, so it is 66 years old, older 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 619 vehicles a day, roughly 5% of them trucks, projected to reach 859 by 2035. The structure is 160 ft (48.9 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesSR 81
CrossesAuglaize River
LocationOver Auglaize River
RouteState Highway 81
CountyAllen County
StateOhio
Coordinates40.74301, -84.31592
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.8 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length160 ft (48.9 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic619 (2015)
Projected traffic859 by 2035
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$659,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 81 over Auglaize River built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2011.

What condition is SR 81 over Auglaize 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 2023.

How much traffic does SR 81 over Auglaize River carry?

About 619 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is SR 81 over Auglaize River?

The structure is 160 ft (48.9 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns SR 81 over Auglaize River?

It is owned by the State Highway Agency.