US Bridges

County Line Road over I-75 @ 123.76

FairPosted for load

Dooly County, Georgia · 3.5 MI NW of Unadilla · Structure no. 000000009300420

Built
1961
64 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
213 ft
4 main spans
Daily traffic
519
2024 count
Owner
State
State Highway Agency

About this bridge

County Line Road over I-75 @ 123.76 is a steel continuous stringer/multi-beam or girder carrying County Line Road over I-75 @ 123.76 in Dooly County, Georgia. It was built in 1961, so it is 64 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 519 vehicles a day, roughly 1% of them trucks, projected to reach 735 by 2032. The structure is 213 ft (64.9 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesI-75 @ 123.76
Location3.5 MI NW of Unadilla
RouteCounty Highway 440
CountyDooly County
StateGeorgia
Coordinates32.29033, -83.75896
Functional classRural Minor Collector

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length213 ft (64.9 m)
Longest span72 ft (21.9 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic519 (2024)
Projected traffic735 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 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 County Line Road over I-75 @ 123.76 built?

It was built in 1961, making it 64 years old in 2025.

What condition is County Line Road over I-75 @ 123.76 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 July 2023.

How much traffic does County Line Road over I-75 @ 123.76 carry?

About 519 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is County Line Road over I-75 @ 123.76?

The structure is 213 ft (64.9 m) long with a longest span of 72 ft (21.9 m) and a deck 32 ft wide.

Who owns County Line Road over I-75 @ 123.76?

It is owned by the State Highway Agency.