US Bridges

I-75 over SR 155- Nrflk Sthrn RR

Fair

Henry County, Georgia · 3 MI S of Mcdonough · Structure no. 000000015100330

Built
1967
58 years old, rebuilt 2001
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
240 ft
4 main spans
Daily traffic
119,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 over SR 155- Nrflk Sthrn RR is a steel stringer/multi-beam or girder carrying I-75 over SR 155- Nrflk Sthrn RR in Henry County, Georgia. It was built in 1967 and reconstructed in 2001, so it is 58 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 119,000 vehicles a day, roughly 1% of them trucks, projected to reach 125,730 by 2031. The structure is 240 ft (73.2 m) long and 154 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75
CrossesSR 155- Nrflk Sthrn RR
Location3 MI S of Mcdonough
RouteInterstate 75
CountyHenry County
StateGeorgia
Coordinates33.41126, -84.16116
Functional classRural Principal Arterial - Interstate

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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span70 ft (21.3 m)
Deck width154 ft (46.8 m)
Roadway width148 ft (45 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic119,000 (2024)
Projected traffic125,730 by 2031
Trucks1%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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$3.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 over SR 155- Nrflk Sthrn RR built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2001.

What condition is I-75 over SR 155- Nrflk Sthrn RR 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 December 2024.

How much traffic does I-75 over SR 155- Nrflk Sthrn RR carry?

About 119,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 over SR 155- Nrflk Sthrn RR?

The structure is 240 ft (73.2 m) long with a longest span of 70 ft (21.3 m) and a deck 154 ft wide.

Who owns I-75 over SR 155- Nrflk Sthrn RR?

It is owned by the State Highway Agency.