US Bridges

Lower Big Springs over I-185 Nbl (sr 411)

Good

Troup County, Georgia · 4 MI SE of Lagrange · Structure no. 000000028500920

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
207 ft
3 main spans
Daily traffic
1,080
2024 count
Owner
State
State Highway Agency

About this bridge

Lower Big Springs over I-185 Nbl (sr 411) is a steel stringer/multi-beam or girder carrying Lower Big Springs over I-185 Nbl (sr 411) 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 1,080 vehicles a day, roughly 1% of them trucks, projected to reach 1,140 by 2032. The structure is 207 ft (63.1 m) long and 46 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLower Big Springs
CrossesI-185 Nbl (sr 411)
Location4 MI SE of Lagrange
RouteCounty Highway 1429
CountyTroup County
StateGeorgia
Coordinates32.98624, -84.94917
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length207 ft (63.1 m)
Longest span90 ft (27.4 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,080 (2024)
Projected traffic1,140 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lower Big Springs over I-185 Nbl (sr 411) built?

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

What condition is Lower Big Springs over I-185 Nbl (sr 411) 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 Lower Big Springs over I-185 Nbl (sr 411) carry?

About 1,080 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Lower Big Springs over I-185 Nbl (sr 411)?

The structure is 207 ft (63.1 m) long with a longest span of 90 ft (27.4 m) and a deck 46 ft wide.

Who owns Lower Big Springs over I-185 Nbl (sr 411)?

It is owned by the State Highway Agency.