US Bridges

I-75 over M-1506- CSX RR (340554R)

Fair

Whitfield County, Georgia · In NW Dalton · Structure no. 000000031300470

Built
1964
61 years old, rebuilt 1987
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
311 ft
5 main spans
Daily traffic
88,100
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 over M-1506- CSX RR (340554R) is a steel stringer/multi-beam or girder carrying I-75 over M-1506- CSX RR (340554R) in Whitfield County, Georgia. It was built in 1964 and reconstructed in 1987, so it is 61 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 88,100 vehicles a day, roughly 1% of them trucks, projected to reach 121,665 by 2031. The structure is 311 ft (94.8 m) long and 151 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75
CrossesM-1506- CSX RR (340554R)
LocationIn NW Dalton
RouteInterstate 75
CountyWhitfield County
StateGeorgia
Coordinates34.79832, -85.0042
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.9 US tons
Inventory rating20.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length311 ft (94.8 m)
Longest span70 ft (21.3 m)
Deck width151 ft (46.1 m)
Roadway width145 ft (44.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88,100 (2024)
Projected traffic121,665 by 2031
Trucks1%
Lanes on structure7
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$4.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 over M-1506- CSX RR (340554R) built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1987.

What condition is I-75 over M-1506- CSX RR (340554R) 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 May 2024.

How much traffic does I-75 over M-1506- CSX RR (340554R) carry?

About 88,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 over M-1506- CSX RR (340554R)?

The structure is 311 ft (94.8 m) long with a longest span of 70 ft (21.3 m) and a deck 151 ft wide.

Who owns I-75 over M-1506- CSX RR (340554R)?

It is owned by the State Highway Agency.