US Bridges

Smithville Rd. over US35

Good

Montgomery County, Ohio · 1.03MI.W. of Jct. SR-835 · Structure no. 5702917

Built
1963
62 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
235 ft
4 main spans
Daily traffic
18,495
2015 count
Owner
State
State Highway Agency

About this bridge

Smithville Rd. over US35 is a steel continuous stringer/multi-beam or girder carrying Smithville Rd. over US35 in Montgomery County, Ohio. It was built in 1963, so it is 62 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 18,495 vehicles a day, roughly 7% of them trucks, projected to reach 76,396 by 2035. The structure is 235 ft (71.6 m) long and 73 ft wide.

CarriesSmithville Rd.
CrossesUS35
Location1.03MI.W. of Jct. SR-835
RouteCity Street 4975
StateOhio
Coordinates39.75009, -84.13934
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length235 ft (71.6 m)
Longest span71 ft (21.6 m)
Deck width73 ft (22.2 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,495 (2015)
Projected traffic76,396 by 2035
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Smithville Rd. over US35 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Smithville Rd. over US35 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 December 2023.

How much traffic does Smithville Rd. over US35 carry?

About 18,495 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Smithville Rd. over US35?

The structure is 235 ft (71.6 m) long with a longest span of 71 ft (21.6 m) and a deck 73 ft wide.

Who owns Smithville Rd. over US35?

It is owned by the State Highway Agency.