US Bridges

Ir 75 NB over Little Ottawa River

Good

Allen County, Ohio · 1 Mi. N of Auglaize Co. L · Structure no. 0201669

Built
2015
10 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
86 ft
3 main spans
Daily traffic
20,855
2015 count
Owner
State
State Highway Agency

About this bridge

Ir 75 NB over Little Ottawa River is a concrete continuous slab carrying Ir 75 NB over Little Ottawa River in Allen County, Ohio. It was built in 2015, so it is 10 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 20,855 vehicles a day, roughly 47% of them trucks, projected to reach 25,410 by 2035. The structure is 86 ft (26.2 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIr 75 NB
CrossesLittle Ottawa River
Location1 Mi. N of Auglaize Co. L
RouteInterstate 75
StateOhio
Coordinates40.67197, -84.13131
Functional classUrban Principal Arterial - Interstate

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 protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length86 ft (26.2 m)
Longest span32 ft (9.9 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,855 (2015)
Projected traffic25,410 by 2035
Trucks47%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ir 75 NB over Little Ottawa River built?

It was built in 2015, making it 10 years old in 2025.

What condition is Ir 75 NB over Little Ottawa 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 Ir 75 NB over Little Ottawa River carry?

About 20,855 vehicles per day (2015 count), of which roughly 47% are trucks.

How long is Ir 75 NB over Little Ottawa River?

The structure is 86 ft (26.2 m) long with a longest span of 32 ft (9.9 m) and a deck 47 ft wide.

Who owns Ir 75 NB over Little Ottawa River?

It is owned by the State Highway Agency.