polk County Bridge Inspections
Florida Bridge Information - Polk County
Sr 60 / Buttermilk Slough
| Florida State Bridge Inspections |
|---|
| Health Index 1 | Sufficiency Rating 2 |
|---|
| 98.6 |
64.9 |
| National Bridge Inventory Rating |
|---|
| Functionally Obsolete |
The term "functionally obsolete" only means that a bridge does not meet current road design standards. For example, some bridges are "functionally obsolete" because they were built at a time when lane widths were narrower than the current standard.
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| Bridge Information |
|---|
| Structure Status: | Open, no restriction |
| County: | Polk County |
| Owner: | State Highway Agency |
Maintenance Responsibility: | State Highway Agency |
| Roadway: | Sr 60 |
Facility Crossed: | Buttermilk Slough |
| Year Built: | 1940 |
Reconstructed: | 1951 |
| Average Daily Traffic - State: | 6,900 |
| Average Daily Traffic - NBI: | 7,400 |
| Average Daily Truck Traffic - NBI: | 2812.0 (38 % of NBI Average Daily Traffic) |
| Future Average Daily Traffic - NBI: | 12,839 in year 2027 |
| Bypass, Detour Length: | 39.8 mile |
| Toll System: | On free road. The structure is toll-free and carries a toll-free highway. |
| Functional Classification: | Rural - Principal Arterial - Other |
| Type of Service On the Structure: | Highway |
| Lanes On the Structure: | 2 |
| Vertical Clearance Over Bridge Roadway: | No restriction exists |
| Type of Service Under the Structure: | Waterway |
| Lanes Under the Structure: | 0 |
| Vertical Clearance Under Bridge Roadway: | Feature not a highway or railroad |
| Historical Significance: | Historical significance is not determinable at this time. |
| Last Inspection - State: | October 6, 2008 |
| Last Inspection - NBI: | October, 2006 |
| Designated Inspection Frequency (NBI): | Every 24 Months |
| National Bridge Inventory Safety Feature |
|---|
| Bridge Median: | No median |
| 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 meets currently acceptable standards. |
| 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: | GOOD CONDITION - some minor problems. |
| Superstructure: | GOOD CONDITION - some minor problems. |
| Substructure: | GOOD CONDITION - some minor problems. |
| Channel and Channel Protection: | Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. |
| Culverts: | Not applicable. Use if structure is not a culvert. |
| National Bridge Inventory Operating Ratings: Load Testing - 60.0 tons |
| National Bridge Inventory Ratings: Load Testing - 35.9 tons |
| National Bridge Inventory Appraisal Ratings |
|---|
| Structural Evaluation: | 7 - Better than present minimum criteria |
| Deck Geometry : | 2 - Basically intolerable requiring high priority of replacement |
| Underclear, Vertical & Horizontal : | N - Not applicable |
| Waterway Adequacy : | 7 - Better than present minimum criteria |
| Approach Roadway Alignment : | 7 - Better than present minimum 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