County Road 86 over Big Muddy Creek
Morton County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 86 over Big Muddy Creek in Morton County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 350 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 115 of the 269 inventoried bridges in Morton County rated good (42.8%); 26 (9.7%) 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 July 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 → (46.72336, -101.50974)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 170 ft |
| Location | City of Almont |
| NBI structure number | 000000030128180 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 North Dakota department of transportation.
Busiest bridges in Morton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 94 over Missouri River | 1965 | 24,125 | Fair |
| Interstate 194 over Business Loop 94 | 1981 | 18,200 | Fair |
| I-94 Business Loop over West Midway Separation | 1965 | 16,750 | Fair |
| Interstate 94 over East Midway Interchange | 1965 | 9,100 | Fair |
| Interstate 194 over Business 94 | 1981 | 9,100 | Fair |
| Interstate 194 over Business 94 | 1981 | 9,100 | Fair |
All bridges nearby: Morton County, ND bridge conditions · every bridge in Morton County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.