US Bridges

Hamilton Mill RD over Suwanee Creek

Good

Gwinnett County, Georgia · In Buford · Structure no. 000000013551540

Built
1997
28 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
18,400
2024 count
Owner
County
County Highway Agency

About this bridge

Hamilton Mill RD over Suwanee Creek is a concrete culvert carrying Hamilton Mill RD over Suwanee Creek in Gwinnett County, Georgia. It was built in 1997, so it is 28 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 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 18,400 vehicles a day, roughly 1% of them trucks, projected to reach 21,960 by 2032. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHamilton Mill RD
CrossesSuwanee Creek
LocationIn Buford
RouteCounty Highway 5504
StateGeorgia
Coordinates34.1137, -83.99253
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,400 (2024)
Projected traffic21,960 by 2032
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$272,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hamilton Mill RD over Suwanee Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Hamilton Mill RD 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 Hamilton Mill RD over Suwanee Creek carry?

About 18,400 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Hamilton Mill RD over Suwanee Creek?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m).

Who owns Hamilton Mill RD over Suwanee Creek?

It is owned by the County Highway Agency.