T 4380 over Third River
Itasca County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T 4380 over Third River in Itasca County, Minnesota, 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 1983, making it 42 years old at the 2025 inventory.
- It carries about 5 vehicles a day (traffic count year 1993).
- It is one of 84 of the 171 inventoried bridges in Itasca County rated good (49.1%); 8 (4.7%) 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 October 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (47.6494, -94.3567)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 25 ft |
| Location | 2.5 Mi E of W Co Line |
| NBI structure number | R0359 |
| Condition class | Good |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Itasca County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 169 over Mississippi River | 1932 | 16,400 | Good |
| Msas 119 over Mississippi River | 1975 | 10,300 | Fair |
| US 2 over Bass Brook | 1931 | 9,600 | Fair |
| US 169 over Csah 61 | 1966 | 9,100 | Good |
| US 169 over Pokegama Lake | 2006 | 8,800 | Fair |
| M 30 over US 169 | 1966 | 8,600 | Fair |
All bridges nearby: Itasca County, MN bridge conditions · every bridge in Itasca County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.