US Bridges

US 33 over Mill CR

Good

Union County, Ohio · 1.02 MI N. of SR739 · Structure no. 8000999

Built
1966
59 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
200 ft
3 main spans
Daily traffic
19,774
2018 count
Owner
State
State Highway Agency

About this bridge

US 33 over Mill CR is a steel continuous stringer/multi-beam or girder carrying US 33 over Mill CR in Union County, Ohio. It was built in 1966, so it is 59 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 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 19,774 vehicles a day, roughly 10% of them trucks, projected to reach 27,446 by 2038. The structure is 200 ft (61 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 33
CrossesMill CR
Location1.02 MI N. of SR739
RouteU.S. Route 33
CountyUnion County
StateOhio
Coordinates40.24761, -83.39224
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span75 ft (22.9 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,774 (2018)
Projected traffic27,446 by 2038
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 33 over Mill CR built?

It was built in 1966, making it 59 years old in 2025.

What condition is US 33 over Mill CR 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 March 2023.

How much traffic does US 33 over Mill CR carry?

About 19,774 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is US 33 over Mill CR?

The structure is 200 ft (61 m) long with a longest span of 75 ft (22.9 m) and a deck 40 ft wide.

Who owns US 33 over Mill CR?

It is owned by the State Highway Agency.