Parker Road over Trib to Mill Creek
Washtenaw County, Michigan · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Parker Road over Trib to Mill Creek in Washtenaw County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1968, making it 57 years old at the 2025 inventory.
- It carries about 300 vehicles a day (traffic count year 2014).
- Its listed owner is the county highway agency.
- It is one of 47 of the 262 inventoried bridges in Washtenaw County rated poor (17.9%); 47 (17.9%) 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 September 2024, on a 12-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (42.2681, -83.89706)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 3 | 3 | Serious condition |
Bridge details
| Structure | Steel culvert |
| Length | about 20 ft |
| Location | Scio Twp Sec 30 |
| NBI structure number | 000000000013913 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 12 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 Washtenaw County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-94 over Huron River | 1971 | 102,776 | Fair |
| I-94 over Aa RR | 1954 | 78,348 | Fair |
| I-94 over Honey Creek | 2000 | 77,206 | Fair |
| US-23 over Horseshoe Lake Drain | 1956 | 66,750 | Fair |
| Gotfredson Road over M-14 | 1975 | 65,500 | Fair |
| M-14 & US-23 Br over Mdot RR Cor & Huron Rvr | 1956 | 59,888 | Fair |
All bridges nearby: Washtenaw County, MI bridge conditions · every bridge in Washtenaw County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.