County Rd 423 over Br of Mace CR
Andrew County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd 423 over Br of Mace CR in Andrew County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1993, making it 32 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 81 of the 162 inventoried bridges in Andrew County rated fair (50.0%); 19 (11.7%) 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 December 2023, 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 → (39.93734, -94.8651)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 29 ft |
| Location | S 18 T 59 N R 35 W |
| NBI structure number | 23671 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2023 |
| 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 Andrew County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 29 S over Honey CR | 1966 | 29,884 | Fair |
| Is 29 S over Crd 404 Mill CR | 1966 | 16,520 | Fair |
| Is 29 S over Rt T | 1965 | 14,184 | Fair |
| Is 29 S over Hopkins & Mace CR | 2020 | 14,184 | Good |
| Is 29 S over Rt Dd Abandoned RR Dil | 1965 | 13,410 | Fair |
| Is 29 S over Rp IS29N to IS229S | 1965 | 13,410 | Fair |
All bridges nearby: Andrew County, MO bridge conditions · every bridge in Andrew County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.