SB on US-31 as you enter the town of Grand Haven you will cross over the US-31 Draw Bridge at the Grand River. As your headed SB approaching the bridge the Speed Limit drops from 70 to 50 over the bridge. As soon as you get off the bridge the limit drops again to 40 as you approach Jackson Rd. Just before Jackson the limit drops again to 30 for about a mile thru town. Just after Jackson there is a gas station on the west side of 31 where the city cops love to hide and radar drivers as they enter town. If you in this area it’s very hard to make sure you speed is down from 70 to 30 before you hit town because it happens pretty quickly. The cops love this spot, especially at night because it’s a pretty quiet town and I’m sure they get bored at night and this spot to nail the unsuspecting driver.