polk County Bridge Inspections
Florida Bridge Information - Polk County
Griffin Road Over I-4
| Florida State Bridge Inspections |
|---|
| Health Index 1 | Sufficiency Rating 2 |
|---|
| 99.9 |
83.7 |
| National Bridge Inventory Rating |
|---|
|
|
| Bridge Information |
|---|
| Structure Status: | Open, no restriction |
| County: | Polk County |
| Owner: | State Highway Agency |
Maintenance Responsibility: | State Highway Agency |
| Roadway: | Griffin Rd (Cr582) |
Facility Crossed: | I-4 (Sr-400) |
| Year Built: | 2005 |
| Average Daily Traffic - State: | 11,500 |
| Average Daily Traffic - NBI: | 10,998 |
| Average Daily Truck Traffic - NBI: | 769.9 (7 % of NBI Average Daily Traffic) |
| Future Average Daily Traffic - NBI: | 13,198 in year 2026 |
| Bypass, Detour Length: | 11.8 mile |
| Toll System: | On free road. The structure is toll-free and carries a toll-free highway. |
| Functional Classification: | Expressways - Collector |
| Type of Service On the Structure: | Highway-pedestrian |
| Lanes On the Structure: | 4 |
| Vertical Clearance Over Bridge Roadway: | 100 feet |
| Type of Service Under the Structure: | Highway, with or without pedestrian |
| Lanes Under the Structure: | 8 |
| Vertical Clearance Under Bridge Roadway: | Highway beneath structure, 18.60 feet |
| Historical Significance: | Bridge is not eligible for the National Register of Historic Places. |
| Last Inspection - State: | December 9, 2010 |
| Last Inspection - NBI: | December, 2006 |
| Designated Inspection Frequency (NBI): | Every 24 Months |
| National Bridge Inventory Safety Feature |
|---|
| Bridge Median: | Closed median (no barrier) |
| Bridge Railings: | Inspected feature meets currently acceptable standards. |
| Transitions: | Inspected feature does not meet currently acceptable standards or a safety feature is required and none is provided. |
| Approach Guardrail: | Inspected feature does not meet currently acceptable standards or a safety feature is required and none is provided. |
| Approach Guardrail Ends: | Inspected feature does not meet currently acceptable standards or a safety feature is required and none is provided. |
| National Bridge Inventory Condition Ratings |
|---|
| Deck: | VERY GOOD CONDITION - no problems noted. |
| Superstructure: | VERY GOOD CONDITION - no problems noted. |
| Substructure: | VERY GOOD CONDITION - no problems noted. |
| Channel and Channel Protection: | Not applicable. Use when bridge is not over a waterway (channel). |
| Culverts: | Not applicable. Use if structure is not a culvert. |
| National Bridge Inventory Operating Ratings: Load Factor (LF) - 68.9 tons |
| National Bridge Inventory Ratings: Load Factor (LF) - 41.5 tons |
| National Bridge Inventory Appraisal Ratings |
|---|
| Structural Evaluation: | 8 - Equal to present desirable criteria |
| Deck Geometry : | 5 - Somewhat better than minimum adequacy to tolerate being left in place as is |
| Underclear, Vertical & Horizontal : | 7 - Better than present minimum criteria |
| Waterway Adequacy : | N - Not applicable |
| Approach Roadway Alignment : | 9 - Superior to present desirable criteria |
| Critical Feature Inspection |
|---|
| Fracture Critical Details: N |
| Underwater Inspection: N |
| Other Special Inspection: N |
1. The "health index" is a tool that measures the overall condition of a bridge. The health index typically includes about 10 to 12 different elements that are evaluated by the department. A lower health index means that more work would be required to improve the bridge to an ideal condition. A health index below 85 generally indicates that some repairs are needed, although it doesn't mean the bridge is unsafe. A low health index may also indicate that it would be more economical to replace the bridge than to repair it.
2. The "sufficiency rating" is a tool that is used to help determine whether a bridge that is structurally deficient or functionally obsolete should be repaired or just replaced. The sufficiency rating considers a number of factors, only about half of which relate to the condition of the bridge itself. The sufficiency ratings for bridges are part of a formula used by the Federal Highway Administration when it allocates federal funds to the states for bridge replacement.
Source: Office of Maintenance, Florida Department of Transportation (Last Update: January, 2010) & U.S. Department of Transportation