Dorr Rd over Haymarsh Creek
Missaukee County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Dorr Rd over Haymarsh Creek in Missaukee County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1984, making it 41 years old at the 2025 inventory.
- It carries about 330 vehicles a day (traffic count year 2007).
- Its listed owner is the county highway agency.
- It is one of 20 of the 39 inventoried bridges in Missaukee County rated good (51.3%); 4 (10.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now good (deck 2 to 9, superstructure 5 to 9, substructure 4 to 8).
- Status change: its 2024 load posting has been removed.
- Its most recent inspection on record is dated December 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 → (44.38967, -84.88593)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 2 | 9 | Excellent condition |
| Superstructure | 5 | 9 | Excellent condition |
| Substructure | 4 | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 34 ft |
| Location | Section 14 T23N R5W |
| NBI structure number | 000000000007050 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2024 |
| 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 Michigan department of transportation.
Busiest bridges in Missaukee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-55|w Watergate R over Clam River | 1973 | 5,113 | Fair |
| M-55|e Houghton La over W Br Muskegon River | 1931 | 4,338 | Fair |
| M-55|e Houghton La over Muskegon River | 1935 | 4,338 | Fair |
| M-66|w Stoney Corn over N Br Clam River | 1933 | 4,081 | Fair |
| M-66 over Clam River | 1929 | 2,696 | Fair |
| M-66|s Burkett Rd over Middle Br Clam River | 1929 | 2,466 | Fair |
All bridges nearby: Missaukee County, MI bridge conditions · every bridge in Missaukee County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.