US Bridges

SR 20 over M5505 RR Ave-Nor Sou RR

Good

Gwinnett County, Georgia · In Sugar Hill · Structure no. 000000013500180

Built
1975
50 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
240 ft
4 main spans
Daily traffic
50,100
2024 count
Owner
State
State Highway Agency

About this bridge

SR 20 over M5505 RR Ave-Nor Sou RR is a steel stringer/multi-beam or girder carrying SR 20 over M5505 RR Ave-Nor Sou RR in Gwinnett County, Georgia. It was built in 1975, so it is 50 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 50,100 vehicles a day, roughly 4% of them trucks, projected to reach 57,090 by 2032. The structure is 240 ft (73.2 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 20
CrossesM5505 RR Ave-Nor Sou RR
LocationIn Sugar Hill
RouteState Highway 20
CountyGwinnett County
StateGeorgia
Coordinates34.10499, -84.02761
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span72 ft (21.9 m)
Deck width70 ft (21.4 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,100 (2024)
Projected traffic57,090 by 2032
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 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$2.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 20 over M5505 RR Ave-Nor Sou RR built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR 20 over M5505 RR Ave-Nor Sou RR 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 SR 20 over M5505 RR Ave-Nor Sou RR carry?

About 50,100 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 20 over M5505 RR Ave-Nor Sou RR?

The structure is 240 ft (73.2 m) long with a longest span of 72 ft (21.9 m) and a deck 70 ft wide.

Who owns SR 20 over M5505 RR Ave-Nor Sou RR?

It is owned by the State Highway Agency.