US Bridges

SR-66 over Swift Run

Good

Miami County, Ohio · 2.04 Mi. S. of Shelby Co. · Structure no. 5501652

Built
1960
65 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
114 ft
3 main spans
Daily traffic
4,672
2015 count
Owner
State
State Highway Agency

About this bridge

SR-66 over Swift Run is a concrete continuous slab carrying SR-66 over Swift Run in Miami County, Ohio. It was built in 1960, so it is 65 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 4,672 vehicles a day, roughly 6% of them trucks, projected to reach 6,485 by 2035. The structure is 114 ft (34.7 m) long and 44 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSR-66
CrossesSwift Run
Location2.04 Mi. S. of Shelby Co.
RouteState Highway 66
CountyMiami County
StateOhio
Coordinates40.17614, -84.26159
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length114 ft (34.7 m)
Longest span43 ft (13.1 m)
Deck width44 ft (13.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,672 (2015)
Projected traffic6,485 by 2035
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

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 SR-66 over Swift Run built?

It was built in 1960, making it 65 years old in 2025.

What condition is SR-66 over Swift Run 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 2024.

How much traffic does SR-66 over Swift Run carry?

About 4,672 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is SR-66 over Swift Run?

The structure is 114 ft (34.7 m) long with a longest span of 43 ft (13.1 m) and a deck 44 ft wide.

Who owns SR-66 over Swift Run?

It is owned by the State Highway Agency.