US Bridges

Main Street over Ottawa River

Fair

Allen County, Ohio · 1400 Ft.S. of Town Square · Structure no. 0260061

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
151 ft
3 main spans
Daily traffic
5,132
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main Street over Ottawa River is a prestressed concrete continuous box beam or girders - multiple carrying Main Street over Ottawa River in Allen County, Ohio. It was built in 1971, so it is 54 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 5 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 5,132 vehicles a day, roughly 3% of them trucks, projected to reach 7,123 by 2042. The structure is 151 ft (46 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMain Street
CrossesOttawa River
Location1400 Ft.S. of Town Square
RouteCity Street 0MAIN
StateOhio
Coordinates40.73618, -84.10502
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length151 ft (46 m)
Longest span49 ft (14.9 m)
Deck width65 ft (19.7 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,132 (2022)
Projected traffic7,123 by 2042
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Main Street over Ottawa River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Main Street over Ottawa River 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 July 2024.

How much traffic does Main Street over Ottawa River carry?

About 5,132 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Main Street over Ottawa River?

The structure is 151 ft (46 m) long with a longest span of 49 ft (14.9 m) and a deck 65 ft wide.

Who owns Main Street over Ottawa River?

It is owned by the City or Municipal Highway Agency.