US Bridges

SR 75 Alternate over Chattahoochee River

FairPosted for load

White County, Georgia · 1.1 MI NW of Helen · Structure no. 000000031100170

Built
1959
66 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete
Length
160 ft
4 main spans
Daily traffic
2,250
2024 count
Owner
State
State Highway Agency

About this bridge

SR 75 Alternate over Chattahoochee River is a concrete tee beam carrying SR 75 Alternate over Chattahoochee River in White County, Georgia. It was built in 1959, so it is 66 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. Its operating status is: posted for load restriction.

It carries about 2,250 vehicles a day, roughly 1% of them trucks, projected to reach 2,100 by 2032. The structure is 160 ft (48.8 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 75 Alternate
CrossesChattahoochee River
Location1.1 MI NW of Helen
RouteState Highway 75
CountyWhite County
StateGeorgia
Coordinates34.71294, -83.74587
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16 US tons
Inventory rating9.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,250 (2024)
Projected traffic2,100 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$938,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 75 Alternate over Chattahoochee River built?

It was built in 1959, making it 66 years old in 2025.

What condition is SR 75 Alternate over Chattahoochee River 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 January 2024.

How much traffic does SR 75 Alternate over Chattahoochee River carry?

About 2,250 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 75 Alternate over Chattahoochee River?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns SR 75 Alternate over Chattahoochee River?

It is owned by the State Highway Agency.