Castor Road over N Br Carroll Creek
Midland County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Castor Road over N Br Carroll Creek in Midland County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 158 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 39 of the 140 inventoried bridges in Midland County rated good (27.9%); 24 (17.1%) 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 October 2024, 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 → (43.64992, -84.48822)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Timber slab |
| Length | about 23 ft |
| Location | Jerome Twp Sec 31 |
| NBI structure number | 000000000013971 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| 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 Michigan department of transportation.
Busiest bridges in Midland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-20 EB over Tittabawassee River | 2019 | 21,358 | Good |
| M-20 WB over Tittabawassee River | 2018 | 21,350 | Good |
| N Saginaw Road over Sturgeon Creek | 1931 | 20,000 | Fair |
| Jefferson Rd over US-10 | 1960 | 18,005 | Fair |
| N Saginaw Road over State Drain | 1931 | 17,000 | Fair |
| M-20 over Prairie Creek | 1938 | 16,168 | Fair |
All bridges nearby: Midland County, MI bridge conditions · every bridge in Midland County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.