Polk County Bridge Report Card
Polk County scores 96 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Polk County, Florida
Polk County has 359 bridges in the National Bridge Inventory, with 0 rated poor and 7 rated scour-critical. Its poor-condition share of 0.0% is at or below the 2.8% statewide average.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Polk County a Bridge Condition Exposure Score of 96/100 (A). The county has 359 bridges in the National Bridge Inventory, including 0 in poor condition and 7 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 | 1.9% | 3.9 |
| Average age vs national baseline | 10 | 46 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 4,396,820 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 | 2.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.9% |
| Average Bridge Age | 46 years |
| Poor-Condition Traffic Exposure | 0 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Polk County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Sr-60 WB over Peace Creek Relief | Scour-critical foundation rating | Good | 13,000 | 1951 |
| Snively Rd(cr-655) over Lulu Creek | Scour-critical foundation rating | Fair | 12,600 | 1960 |
| Sr-60 over Buttermilk Slough N Fork | Scour-critical foundation rating | Fair | 10,600 | 1927 |
| Sr-60 over Sheep Hammock Creek | Scour-critical foundation rating | Fair | 10,600 | 1927 |
| Nichols RD Cr-676 over N. Prong Alafia River | Scour-critical foundation rating | Fair | 1,921 | 1971 |
| Howard Avenue over Drainage Canal | Scour-critical foundation rating | Good | 450 | 1993 |
| 4th Wahneta St. E over Wahneta Drainage Canal | Scour-critical foundation rating | Fair | 30 | 1960 |
| I-4 (sr-400) over Winston Drain | High traffic | Good | 127,000 | 1999 |
| I-4 (sr-400) over Winston Creek | High traffic | Good | 127,000 | 1999 |
| I-4 (sr-400) over Lake Gibson Drain Canal | High traffic | Fair | 104,500 | 1961 |
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.