County Highway over Maple River
Cass County, North Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Highway over Maple River in Cass County, North Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 159 of the 369 inventoried bridges in Cass County rated fair (43.1%); 12 (3.3%) 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 August 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 → (46.98231, -97.62143)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 73 ft |
| Location | 3 North 2 East Tower City |
| NBI structure number | 000000009104180 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 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 North Dakota department of transportation.
Busiest bridges in Cass County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| 45TH Street Fargo over I-94/45TH Street Intchg. | 1991 | 50,840 | Fair |
| Ramp to I-94 EB over I-29 I-94 | 1993 | 49,800 | Fair |
| Interstate 94 over US 81 | 1993 | 49,800 | Fair |
| Interstate 94 over 5TH St Separation | 1993 | 49,800 | Fair |
| Interstate 94 over Interstate 29 | 2003 | 48,335 | Fair |
| Interstate 94 over Interstate 29 | 2003 | 48,335 | Good |
All bridges nearby: Cass County, ND bridge conditions · every bridge in Cass County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.