Cobb County Bridge Report Card
Cobb County scores 100 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Cobb County, Georgia
Cobb County has 414 bridges in the National Bridge Inventory, with 0 rated poor and 0 rated scour-critical. Its poor-condition share of 0.0% is at or below the 1.7% statewide average.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Cobb County a Bridge Condition Exposure Score of 100/100 (A). The county has 414 bridges in the National Bridge Inventory, including 0 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 0 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 0.0% | 0.0 |
| Poor-condition traffic exposure | 25 | 0.0% of measured traffic | 0.0 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 39 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 11,742,361 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 0.0% |
| State Poor-Condition Share | 1.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 39 years |
| Poor-Condition Traffic Exposure | 0 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Cobb County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| I-75 (nbl) over M-9495 Terrell Mill RD | High traffic | Good | 325,000 | 1965 |
| I-75 over Poorhouse Creek | High traffic | Good | 325,000 | 1965 |
| I-75 over Rottenwood Creek | High traffic | Good | 263,000 | 1965 |
| I-75- Rmps- Cr2038 over Poplar Creek | High traffic | Good | 262,000 | 1963 |
| I-75 over CR 1043 Banberry Road | High traffic | Fair | 236,000 | 1965 |
| I-75 over Roswell Road | High traffic | Good | 236,000 | 1967 |
| I-75 over SR 120 Loop | High traffic | Good | 236,000 | 1967 |
| I-75 over Sope Creek | High traffic | Fair | 236,000 | 1967 |
| I-75 over M-9020 Bells Ferry Road | High traffic | Good | 227,000 | 1973 |
| I-75 - I-575 over Noonday Creek Trib. | High traffic | Fair | 227,000 | 1973 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.