Sharon Valley Road over River Raisin
Washtenaw County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sharon Valley Road over River Raisin in Washtenaw 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 2019, making it 6 years old at the 2025 inventory.
- It carries about 997 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 64 of the 262 inventoried bridges in Washtenaw County rated good (24.4%); 47 (17.9%) 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 June 2023, 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 → (42.16771, -84.12271)
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 | Prestressed concrete stringer or multi-beam girder |
| Length | about 84 ft |
| Location | Sharon Twp Sec 31 |
| NBI structure number | 000000000010969 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| 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 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.