US Bridges

I-75 over Blackwood Creek

Fair

Gordon County, Georgia · 3 MI S of Calhoun · Structure no. 000000012900550

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
34 ft
5 main spans
Daily traffic
68,100
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 over Blackwood Creek is a concrete culvert carrying I-75 over Blackwood Creek in Gordon County, Georgia. It was built in 1963, so it is 62 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 68,100 vehicles a day, roughly 1% of them trucks, projected to reach 85,695 by 2032. The structure is 34 ft (10.4 m) long.

Location

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CarriesI-75
CrossesBlackwood Creek
Location3 MI S of Calhoun
RouteInterstate 75
CountyGordon County
StateGeorgia
Coordinates34.45488, -84.91945
Functional classUrban 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20 + Mod
Structure length34 ft (10.4 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,100 (2024)
Projected traffic85,695 by 2032
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$417,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 over Blackwood Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-75 over Blackwood Creek 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 2023.

How much traffic does I-75 over Blackwood Creek carry?

About 68,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 over Blackwood Creek?

The structure is 34 ft (10.4 m) long with a longest span of 6 ft (1.8 m).

Who owns I-75 over Blackwood Creek?

It is owned by the State Highway Agency.