Iris Rd over Trib of Shoal CR
Newton County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Iris Rd over Trib of Shoal CR in Newton County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1930, making it 95 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 164 of the 303 inventoried bridges in Newton County rated fair (54.1%); 19 (6.3%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated January 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (36.92235, -94.30925)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 26 ft |
| Location | S 3 T 25 N R 31 W |
| NBI structure number | 21812 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | January 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Newton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 44 E over Lp 49 | 2013 | 43,131 | Fair |
| Is 49 S over Br of Cedar CR | 1995 | 25,800 | Fair |
| Is 44 W over Mo 43 Mo 86 | 1956 | 25,403 | Poor |
| Is 49 S over Shoal CR Drain Are | 1993 | 23,003 | Fair |
| Is 44 W over Cpkc RR | 1960 | 21,697 | Fair |
| Is 44 W over Cst Castle Dr Cst Glend | 1956 | 19,462 | Fair |
All bridges nearby: Newton County, MO bridge conditions · every bridge in Newton County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.