Hillsborough County Bridge Report Card
Hillsborough County scores 97 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Hillsborough County, Florida
Hillsborough County has 845 bridges in the National Bridge Inventory, with 3 rated poor and 11 rated scour-critical. Its poor-condition share of 0.4% is at or below the 2.8% statewide average. Poor-condition bridges carry about 7,570 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Hillsborough County a Bridge Condition Exposure Score of 97/100 (A). The county has 845 bridges in the National Bridge Inventory, including 3 in poor condition and 11 rated scour-critical. Poor-condition bridges carry about 7,570 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 | 0.4% | 0.7 |
| Poor-condition traffic exposure | 25 | 0.0% of measured traffic | 0.0 |
| Scour-critical bridge share | 20 | 1.3% | 2.6 |
| Average age vs national baseline | 10 | 40 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 28,176,668 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 | 0.4% |
| State Poor-Condition Share | 2.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.3% |
| Average Bridge Age | 40 years |
| Poor-Condition Traffic Exposure | 7,570 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Hillsborough County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Bayshore Blvd. over Crayfish Canal | Poor condition + traffic exposure | Poor | 6,600 | 1982 |
| Newberger Road over Kell Creek | Poor condition + traffic exposure | Poor | 740 | 1947 |
| Phillips Lane over Kitchen Branch | Poor condition + traffic exposure | Poor | 230 | 1974 |
| Fletcher Avenue over Hillsborough River | Scour-critical foundation rating | Fair | 38,500 | 1961 |
| Memorial Highway over Sweetwater Creek | Scour-critical foundation rating | Fair | 35,300 | 1973 |
| Falkenburg RD over North Archie Creek | Scour-critical foundation rating | Good | 14,200 | 1997 |
| North Blvd. over Hillsborough River | Scour-critical foundation rating | Fair | 9,100 | 1959 |
| Laurel Street over Hillsborough River | Scour-critical foundation rating | Fair | 7,700 | 1926 |
| Tarpon Springs RD over Brooker Creek | Scour-critical foundation rating | Fair | 6,649 | 1984 |
| Turkey Creek RD over Turkey Creek | Scour-critical foundation rating | Fair | 4,500 | 1966 |
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.