Mt Zion Road over Mark Branch
Rockdale County, Georgia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mt Zion Road over Mark Branch in Rockdale County, Georgia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1992, making it 33 years old at the 2025 inventory.
- It carries about 3,020 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 36 of the 44 inventoried bridges in Rockdale County rated good (81.8%); 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 May 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 → (33.72131, -84.01433)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Aluminum or iron culvert |
| Length | about 28 ft |
| Location | 3.5 Mi N of Conyers |
| NBI structure number | 000000024750180 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Rockdale County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 20 over I-20 | 1963 | 44,600 | Fair |
| SR 20 over CSX Railroad | 1963 | 34,600 | Good |
| SR 20 over Old Covington Highway | 2006 | 34,600 | Good |
| Mcdonough Road over Almond Branch | 1936 | 33,400 | Good |
| Salem Road over I-20 | 1995 | 33,400 | Good |
| SR 138 Ebl over Yellow River | 1957 | 27,200 | Fair |
All bridges nearby: Rockdale County, GA bridge conditions · every bridge in Rockdale County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.