Old San Mateo Road over Mill Branch
Putnam County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old San Mateo Road over Mill Branch in Putnam County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1916 and reconstructed in 2002, making it 109 years old at the 2025 inventory.
- It carries about 511 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 33 of the 73 inventoried bridges in Putnam County rated good (45.2%); 2 (2.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated February 2025, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (29.64694, -81.59306)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 102 ft |
| Location | 0.1 Mi E of SR 207 |
| NBI structure number | 764024 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Putnam County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 17 (SR 15) over St Johns River | 1977 | 35,000 | Fair |
| US-17 (SR-15) over Satsuma Creek | 1952 | 19,972 | Fair |
| SR-207 over Orange Mills Canal | 2001 | 18,200 | Good |
| SR-207 over Dog Branch | 2001 | 18,200 | Fair |
| SR-20 over Sweetwater Creek | 2000 | 11,964 | Fair |
| US-17 (SR-15) over Pinetree Branch | 1993 | 10,600 | Good |
All bridges nearby: Putnam County, FL bridge conditions · every bridge in Putnam County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.