SR73 over Dunham Branch
Calhoun County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR73 over Dunham Branch in Calhoun County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1949 and reconstructed in 2008, making it 76 years old at the 2025 inventory.
- It carries about 1,100 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 11 of the 49 inventoried bridges in Calhoun County rated good (22.4%); 2 (4.1%) are rated poor.
- 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 → (30.24939, -85.22778)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 39 ft |
| Location | 1.6Mi. N of SR71 |
| NBI structure number | 470025 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Calhoun County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR20 over Sutton Creek | 1952 | 11,500 | Fair |
| SR20 over Johnny H Bailey Creek | 1997 | 10,531 | Fair |
| SR20 over Apalachicola Relief | 1997 | 10,531 | Good |
| SR20 over Chipola River | 2015 | 6,600 | Good |
| SR 20 over Commander Creek | 1940 | 6,200 | Good |
| SR20 over Hogpen Branch | 1939 | 6,200 | Good |
All bridges nearby: Calhoun County, FL bridge conditions · every bridge in Calhoun County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.