Mo 49 S over Sutton Br
Iron County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 49 S over Sutton Br in Iron County, Missouri, 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 1924, making it 101 years old at the 2025 inventory.
- It carries about 973 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 37 of the 126 inventoried bridges in Iron County rated good (29.4%); 13 (10.3%) 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 October 2023, 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 → (37.32861, -90.67044)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 20 ft |
| Location | S 36 T 31 N R 3 E |
| NBI structure number | 4698 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Iron County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mo 21 S over Knob CR | 1967 | 6,248 | Fair |
| Old Rte 21 over Stouts CR | 1926 | 4,000 | Fair |
| Mo 21 S over Stouts CR | 1967 | 3,870 | Fair |
| Rt N N over UP RR | 2007 | 3,718 | Good |
| Rt N N over Indian CR | 1932 | 3,718 | Fair |
| Mo 21 S over Claybaugh CR | 1985 | 3,513 | Good |
All bridges nearby: Iron County, MO bridge conditions · every bridge in Iron County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.