US Bridges

SR 204 over Harmon Canal

Fair

Chatham County, Georgia · 10 MI SW of Savannah · Structure no. 000000005100770

Built
1972
53 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
31 ft
4 main spans
Daily traffic
29,200
2024 count
Owner
State
State Highway Agency

About this bridge

SR 204 over Harmon Canal is a concrete culvert carrying SR 204 over Harmon Canal in Chatham County, Georgia. It was built in 1972, so it is 53 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 29,200 vehicles a day, roughly 1% of them trucks, projected to reach 58,665 by 2031. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR 204
CrossesHarmon Canal
Location10 MI SW of Savannah
RouteState Highway 204
CountyChatham County
StateGeorgia
Coordinates31.98472, -81.13229
Functional classUrban Other Principal 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal 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 spans4
Design loadHS 20 + Mod
Structure length31 ft (9.4 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,200 (2024)
Projected traffic58,665 by 2031
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$380,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 204 over Harmon Canal built?

It was built in 1972, making it 53 years old in 2025.

What condition is SR 204 over Harmon Canal 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 June 2024.

How much traffic does SR 204 over Harmon Canal carry?

About 29,200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 204 over Harmon Canal?

The structure is 31 ft (9.4 m) long with a longest span of 7 ft (2.1 m).

Who owns SR 204 over Harmon Canal?

It is owned by the State Highway Agency.