Michigan
Available data:
- Crash
- Roadway Inventory
- Traffic Volume
- Interchange/Ramp
- Guardrail/Barrier
- Years Of Data Available: 1985-1997
- Average Crashes/Year: 145,000
- Roadway Mileage: 9,500
* Michigan data were last entered in HSIS in 1997. Since these data are not current, it is suggested that the user consider using other HSIS states if possible.





