US Bridges

I-185 (nbl) over CR 181 Thompson Road

Good

Troup County, Georgia · 8 MI SE of Lagrange · Structure no. 000000028500760

Built
1977
48 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
145 ft
3 main spans
Daily traffic
24,100
2024 count
Owner
State
State Highway Agency

About this bridge

I-185 (nbl) over CR 181 Thompson Road is a steel continuous stringer/multi-beam or girder carrying I-185 (nbl) over CR 181 Thompson Road in Troup County, Georgia. It was built in 1977, so it is 48 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 24,100 vehicles a day, roughly 13% of them trucks, projected to reach 26,520 by 2032. The structure is 145 ft (44.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-185 (nbl)
CrossesCR 181 Thompson Road
Location8 MI SE of Lagrange
RouteInterstate 185
CountyTroup County
StateGeorgia
Coordinates32.91959, -84.94677
Functional classRural 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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.9 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length145 ft (44.2 m)
Longest span75 ft (22.9 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,100 (2024)
Projected traffic26,520 by 2032
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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$850,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-185 (nbl) over CR 181 Thompson Road built?

It was built in 1977, making it 48 years old in 2025.

What condition is I-185 (nbl) over CR 181 Thompson Road 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 November 2023.

How much traffic does I-185 (nbl) over CR 181 Thompson Road carry?

About 24,100 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is I-185 (nbl) over CR 181 Thompson Road?

The structure is 145 ft (44.2 m) long with a longest span of 75 ft (22.9 m) and a deck 44 ft wide.

Who owns I-185 (nbl) over CR 181 Thompson Road?

It is owned by the State Highway Agency.