US Bridges

Rock Mill Road over CSX Railroad

Good

Troup County, Georgia · 7 MI W of Lagrange · Structure no. 000000028500310

Built
1973
52 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
208 ft
3 main spans
Daily traffic
1,270
2024 count
Owner
County
County Highway Agency

About this bridge

Rock Mill Road over CSX Railroad is a prestressed concrete stringer/multi-beam or girder carrying Rock Mill Road over CSX Railroad in Troup County, Georgia. It was built in 1973, so it is 52 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 1,270 vehicles a day, roughly 1% of them trucks, projected to reach 1,710 by 2032. The structure is 208 ft (63.4 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRock Mill Road
CrossesCSX Railroad
Location7 MI W of Lagrange
RouteCounty Highway 740
CountyTroup County
StateGeorgia
Coordinates33.05298, -85.18919
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 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 alignment7: Better than present minimum criteria
Operating rating51.9 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length208 ft (63.4 m)
Longest span70 ft (21.3 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,270 (2024)
Projected traffic1,710 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Rock Mill Road over CSX Railroad built?

It was built in 1973, making it 52 years old in 2025.

What condition is Rock Mill Road over CSX Railroad 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 September 2023.

How much traffic does Rock Mill Road over CSX Railroad carry?

About 1,270 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Rock Mill Road over CSX Railroad?

The structure is 208 ft (63.4 m) long with a longest span of 70 ft (21.3 m) and a deck 47 ft wide.

Who owns Rock Mill Road over CSX Railroad?

It is owned by the County Highway Agency.