US Bridges

CR 20 over North Prong Kolomoki Crk

Fair

Clay County, Georgia · 2 MI NW of Bluffton · Structure no. 000000006150070

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Channel Beam
Prestressed Concrete
Length
90 ft
6 main spans
Daily traffic
130
2024 count
Owner
County
County Highway Agency

About this bridge

CR 20 over North Prong Kolomoki Crk is a prestressed concrete channel beam carrying CR 20 over North Prong Kolomoki Crk in Clay County, Georgia. It was built in 1960, so it is 65 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 130 vehicles a day, roughly 1% of them trucks, projected to reach 735 by 2032. The structure is 90 ft (27.4 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 20
CrossesNorth Prong Kolomoki Crk
Location2 MI NW of Bluffton
RouteCounty Highway 20
CountyClay County
StateGeorgia
Coordinates31.54725, -84.88572
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating30 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadH 15
Structure length90 ft (27.4 m)
Longest span15 ft (4.6 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2024)
Projected traffic735 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$527,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 20 over North Prong Kolomoki Crk built?

It was built in 1960, making it 65 years old in 2025.

What condition is CR 20 over North Prong Kolomoki Crk 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 April 2023.

How much traffic does CR 20 over North Prong Kolomoki Crk carry?

About 130 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is CR 20 over North Prong Kolomoki Crk?

The structure is 90 ft (27.4 m) long with a longest span of 15 ft (4.6 m) and a deck 25 ft wide.

Who owns CR 20 over North Prong Kolomoki Crk?

It is owned by the County Highway Agency.