US Bridges

CR 4 over Mill Branch

Good

Charlton County, Georgia · 5 MI S of ST George · Structure no. 000000004950670

Built
2014
11 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
60 ft
4 main spans
Daily traffic
158
2024 count
Owner
County
County Highway Agency

About this bridge

CR 4 over Mill Branch is a concrete slab carrying CR 4 over Mill Branch in Charlton County, Georgia. It was built in 2014, so it is 11 years old, younger than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 158 vehicles a day, roughly 2% of them trucks, projected to reach 120 by 2032. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCR 4
CrossesMill Branch
Location5 MI S of ST George
RouteCounty Highway 4
StateGeorgia
Coordinates30.44591, -82.04596
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158 (2024)
Projected traffic120 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 4 over Mill Branch built?

It was built in 2014, making it 11 years old in 2025.

What condition is CR 4 over Mill Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does CR 4 over Mill Branch carry?

About 158 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is CR 4 over Mill Branch?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns CR 4 over Mill Branch?

It is owned by the County Highway Agency.