US Bridges

IR-75 over Gr Miami R S Roberts DR

Good

Montgomery County, Ohio · .18MI. N. of Jct. SR-4 · Structure no. 5707803

Built
2014
11 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
942 ft
6 main spans
Daily traffic
117,765
2015 count
Owner
State
State Highway Agency

About this bridge

IR-75 over Gr Miami R S Roberts DR is a prestressed concrete continuous stringer/multi-beam or girder carrying IR-75 over Gr Miami R S Roberts DR in Montgomery County, Ohio. It was built in 2014, so it is 11 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 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 117,765 vehicles a day, roughly 14% of them trucks, projected to reach 163,458 by 2035. The structure is 942 ft (287.1 m) long and 175 ft wide.

Location

Open in Google Maps
CarriesIR-75
CrossesGr Miami R S Roberts DR
Location.18MI. N. of Jct. SR-4
RouteInterstate 75
CountyMontgomery County
StateOhio
Coordinates39.7548, -84.20381
Functional classUrban 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
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length942 ft (287.1 m)
Longest span132 ft (40.2 m)
Deck width175 ft (53.3 m)
Roadway width169 ft (51.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic117,765 (2015)
Projected traffic163,458 by 2035
Trucks14%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed—
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-75 over Gr Miami R S Roberts DR built?

It was built in 2014, making it 11 years old in 2025.

What condition is IR-75 over Gr Miami R S Roberts DR 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 October 2023.

How much traffic does IR-75 over Gr Miami R S Roberts DR carry?

About 117,765 vehicles per day (2015 count), of which roughly 14% are trucks.

How long is IR-75 over Gr Miami R S Roberts DR?

The structure is 942 ft (287.1 m) long with a longest span of 132 ft (40.2 m) and a deck 175 ft wide.

Who owns IR-75 over Gr Miami R S Roberts DR?

It is owned by the State Highway Agency.