Mo 161 S over Is 70
Montgomery County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 161 S over Is 70 in Montgomery County, Missouri, 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 2018, making it 7 years old at the 2025 inventory.
- It carries about 2,752 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 49 of the 164 inventoried bridges in Montgomery County rated good (29.9%); 12 (7.3%) are rated poor.
- 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 → (38.90747, -91.5408)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 9 | Excellent condition |
| Substructure | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 228 ft |
| Location | S 25 T 48 N R 6 W |
| NBI structure number | 35771 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Montgomery County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 70 W over Loutre Rvr | 2019 | 18,267 | Good |
| Is 70 E over Loutre Rvr | 2021 | 18,079 | Good |
| Mo 19 S over Is 70 | 2023 | 8,732 | Good |
| Mo 19 S over Missouri Rvr UP RR | 2005 | 5,944 | Fair |
| Mo 19 S over Loutre Rvr | 1995 | 5,944 | Good |
| Mo 19 N over NS RR | 2015 | 4,424 | Fair |
All bridges nearby: Montgomery County, MO bridge conditions · every bridge in Montgomery County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.