Structure 13552550 · Gwinnett County, GA

SR 20 Westbound over Chattahoochee River

Carries SR 20 Westbound over Chattahoochee River, At Forsyth County Line.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT465 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

465 ft end to end, longest span 140 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built201511 years old
Length464.9 ft141.7 m
Daily traffic18,700counted 2024
Last inspectedDecember 2023every 24 months

Location

StateGeorgia
CountyGwinnett
LocationAt Forsyth County Line
CarriesSR 20 Westbound
CrossesChattahoochee River
Coordinates34.12622, -84.09335

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length464.9 ft (141.7 m)
Max Span140.1 ft (42.7 m)
Deck Width44.9 ft (13.7 m)
Deck Area1941.3 sq m
Main Spans4
Year Built2015

Traffic

Avg Daily Traffic18,700 (2024)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000013552550

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges