SR 20 over M5505 RR Ave-nor Sou RR
Gwinnett County, Georgia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 20 over M5505 RR Ave-nor Sou RR in Gwinnett County, Georgia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 50,100 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 285 of the 320 inventoried bridges in Gwinnett County rated good (89.1%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated December 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (34.10499, -84.02761)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 240 ft |
| Location | In Sugar Hill |
| NBI structure number | 000000013500180 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Gwinnett County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-85 over Bromolow Creek | 1958 | 307,000 | Good |
| I-85 over Beaver Ruin Creek | 1959 | 303,000 | Good |
| I-85 Sbl over Sweetwater Creek | 1958 | 255,000 | Good |
| I-85 NB SB and Cd over Sugarloaf Parkway | 1999 | 172,000 | Good |
| I-85 NB & SB Nbcd over Fork Creek | 1990 | 170,000 | Good |
| I-85 Southbound over SR 419 NB (I-985) | 2018 | 162,000 | Good |
All bridges nearby: Gwinnett County, GA bridge conditions · every bridge in Gwinnett County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.