Police Chief Michael Kass said it appeared Richard Schmitz, 49, was trying to get to McDonalds and took the most direct route -- right over the fire hoses.
"His level of intoxication impaired his judgment," Kass said.
Police arrested Schmitz, of Norwalk, on suspicion of operating while intoxicated. Blood test results were not immediately available.
It wasn't the first traffic incident of the night.
About 30 minutes earlier, a 70-year-old driver had plowed into a police car parked across the road with emergency lights flashing.
"This lady just appeared," Kass said. "She didn't slow down."
No one was injured, but the squad car had to be towed. Kass expects damage to be about $2,000 and said the Monroe County Sheriff's Department is investigating the crash.
The blaze was reported just after 10 p.m. The residents escaped, but flames worked their way into the walls, floor and roof of the house, according to the Sparta Fire Department.
It took firefighters about six hours to contain the fire. The extent of the damage was not known.
Written by La Crosse Tribune