US Bridges

IR-70 over Smith Ditch

Good

Clark County, Ohio · .45MI.W of Jct. IR-675 · Structure no. 1203754

Built
1957
68 years old, rebuilt 1993
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
94 ft
3 main spans
Daily traffic
57,754
2015 count
Owner
State
State Highway Agency

About this bridge

IR-70 over Smith Ditch is a concrete continuous slab carrying IR-70 over Smith Ditch in Clark County, Ohio. It was built in 1957 and reconstructed in 1993, so it is 68 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 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 57,754 vehicles a day, roughly 29% of them trucks, projected to reach 80,163 by 2035. The structure is 94 ft (28.7 m) long and 156 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIR-70
CrossesSmith Ditch
Location.45MI.W of Jct. IR-675
RouteInterstate 70
CountyClark County
StateOhio
Coordinates39.86471, -84.00239
Functional classRural 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating85 US tons
Inventory rating65.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length94 ft (28.7 m)
Longest span35 ft (10.7 m)
Deck width156 ft (47.6 m)
Roadway width153 ft (46.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,754 (2015)
Projected traffic80,163 by 2035
Trucks29%
Lanes on structure6
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IR-70 over Smith Ditch built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1993.

What condition is IR-70 over Smith Ditch 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 IR-70 over Smith Ditch carry?

About 57,754 vehicles per day (2015 count), of which roughly 29% are trucks.

How long is IR-70 over Smith Ditch?

The structure is 94 ft (28.7 m) long with a longest span of 35 ft (10.7 m) and a deck 156 ft wide.

Who owns IR-70 over Smith Ditch?

It is owned by the State Highway Agency.