US Bridges

Ramp N IR471-6th S over Ramp IR471NB US50WB Mona

Good

Hamilton County, Ohio · .3 MI N of Oh-Ky Line · Structure no. 3117553

Built
1985
40 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
366 ft
3 main spans
Daily traffic
2,330
2011 count
Owner
State
State Highway Agency

About this bridge

Ramp N IR471-6th S over Ramp IR471NB US50WB Mona is a steel continuous stringer/multi-beam or girder carrying Ramp N IR471-6th S over Ramp IR471NB US50WB Mona in Hamilton County, Ohio. It was built in 1985, so it is 40 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,330 vehicles a day, roughly 2% of them trucks, projected to reach 3,234 by 2031. The structure is 366 ft (111.6 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRamp N IR471-6th S
CrossesRamp IR471NB US50WB Mona
Location.3 MI N of Oh-Ky Line
RouteU.S. Route 50
CountyHamilton County
StateOhio
Coordinates39.10382, -84.49956
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length366 ft (111.6 m)
Longest span129 ft (39.3 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,330 (2011)
Projected traffic3,234 by 2031
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp N IR471-6th S over Ramp IR471NB US50WB Mona built?

It was built in 1985, making it 40 years old in 2025.

What condition is Ramp N IR471-6th S over Ramp IR471NB US50WB Mona 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 August 2023.

How much traffic does Ramp N IR471-6th S over Ramp IR471NB US50WB Mona carry?

About 2,330 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Ramp N IR471-6th S over Ramp IR471NB US50WB Mona?

The structure is 366 ft (111.6 m) long with a longest span of 129 ft (39.3 m) and a deck 26 ft wide.

Who owns Ramp N IR471-6th S over Ramp IR471NB US50WB Mona?

It is owned by the State Highway Agency.