US Bridges

I-75 over M-1136

Good

Catoosa County, Georgia · 4.2 MI E of Ft Oglethorpe · Structure no. 000000004700390

Built
1961
64 years old, rebuilt 1988
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
282 ft
6 main spans
Daily traffic
94,800
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 over M-1136 is a steel stringer/multi-beam or girder carrying I-75 over M-1136 in Catoosa County, Georgia. It was built in 1961 and reconstructed in 1988, so it is 64 years old, older than the Georgia average of 47.5 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 94,800 vehicles a day, roughly 1% of them trucks, projected to reach 130,650 by 2031. The structure is 282 ft (86 m) long and 139 ft wide.

CarriesI-75
CrossesM-1136
Location4.2 MI E of Ft Oglethorpe
RouteInterstate 75
StateGeorgia
Coordinates34.96252, -85.18438
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating20.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length282 ft (86 m)
Longest span69 ft (21 m)
Deck width139 ft (42.5 m)
Roadway width133 ft (40.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94,800 (2024)
Projected traffic130,650 by 2031
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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$3.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 over M-1136 built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1988.

What condition is I-75 over M-1136 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 I-75 over M-1136 carry?

About 94,800 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 over M-1136?

The structure is 282 ft (86 m) long with a longest span of 69 ft (21 m) and a deck 139 ft wide.

Who owns I-75 over M-1136?

It is owned by the State Highway Agency.