US Bridges

Thompson Mill Road over Suwanee Creek

Good

Gwinnett County, Georgia · In City of Buford · Structure no. 000000013550210

Built
1964
61 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
10,400
2024 count
Owner
County
County Highway Agency

About this bridge

Thompson Mill Road over Suwanee Creek is a concrete culvert carrying Thompson Mill Road over Suwanee Creek in Gwinnett County, Georgia. It was built in 1964, so it is 61 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,400 vehicles a day, roughly 1% of them trucks, projected to reach 10,695 by 2032. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesThompson Mill Road
CrossesSuwanee Creek
LocationIn City of Buford
RouteCounty Highway 5500
StateGeorgia
Coordinates34.12186, -83.98309
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating26.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,400 (2024)
Projected traffic10,695 by 2032
Trucks1%
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$123,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Thompson Mill Road over Suwanee Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Thompson Mill Road over Suwanee Creek 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 December 2023.

How much traffic does Thompson Mill Road over Suwanee Creek carry?

About 10,400 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Thompson Mill Road over Suwanee Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns Thompson Mill Road over Suwanee Creek?

It is owned by the County Highway Agency.