US Bridges

Steam Mill Road over I-185 (sr 411)

Fair

Muscogee County, Georgia · S Central Columbus · Structure no. 000000021500990

Built
1966
59 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
226 ft
4 main spans
Daily traffic
6,290
2024 count
Owner
State
State Highway Agency

About this bridge

Steam Mill Road over I-185 (sr 411) is a steel stringer/multi-beam or girder carrying Steam Mill Road over I-185 (sr 411) in Muscogee County, Georgia. It was built in 1966, so it is 59 years old, older than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,290 vehicles a day, roughly 6% of them trucks, projected to reach 8,820 by 2031. The structure is 226 ft (68.9 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSteam Mill Road
CrossesI-185 (sr 411)
LocationS Central Columbus
RouteCity Street 8039
CountyMuscogee County
StateGeorgia
Coordinates32.45696, -84.92917
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38.9 US tons
Inventory rating22.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length226 ft (68.9 m)
Longest span70 ft (21.3 m)
Deck width37 ft (11.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,290 (2024)
Projected traffic8,820 by 2031
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Steam Mill Road over I-185 (sr 411) built?

It was built in 1966, making it 59 years old in 2025.

What condition is Steam Mill Road over I-185 (sr 411) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Steam Mill Road over I-185 (sr 411) carry?

About 6,290 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Steam Mill Road over I-185 (sr 411)?

The structure is 226 ft (68.9 m) long with a longest span of 70 ft (21.3 m) and a deck 37 ft wide.

Who owns Steam Mill Road over I-185 (sr 411)?

It is owned by the State Highway Agency.