US Bridges

Ir 75 SB over SR 81

Good

Allen County, Ohio · 0.43 Mile N. Ottawa River · Structure no. 0202266

Built
2014
11 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
129 ft
1 main span
Daily traffic
16,723
2015 count
Owner
State
State Highway Agency

About this bridge

Ir 75 SB over SR 81 is a prestressed concrete stringer/multi-beam or girder carrying Ir 75 SB over SR 81 in Allen County, Ohio. It was built in 2014, so it is 11 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 16,723 vehicles a day, roughly 34% of them trucks, projected to reach 23,212 by 2035. The structure is 129 ft (39.3 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIr 75 SB
CrossesSR 81
Location0.43 Mile N. Ottawa River
RouteInterstate 75
CountyAllen County
StateOhio
Coordinates40.75571, -84.07574
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.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating82.1 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length129 ft (39.3 m)
Longest span126 ft (38.4 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,723 (2015)
Projected traffic23,212 by 2035
Trucks34%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ir 75 SB over SR 81 built?

It was built in 2014, making it 11 years old in 2025.

What condition is Ir 75 SB over SR 81 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 November 2024.

How much traffic does Ir 75 SB over SR 81 carry?

About 16,723 vehicles per day (2015 count), of which roughly 34% are trucks.

How long is Ir 75 SB over SR 81?

The structure is 129 ft (39.3 m) long with a longest span of 126 ft (38.4 m) and a deck 47 ft wide.

Who owns Ir 75 SB over SR 81?

It is owned by the State Highway Agency.