Manhole frames, inlet grates recessed for a reason
Issue: A reader noticed that the storm sewer inlet grates and manhole frames on Bluemound and Brookfield roads seem to be recessed below the road and wants to know why this is.
Status: Jeff Chase, city engineer, explained that in general the city attempts to lay storm sewer inlet grates and manhole frames flush with the road surface. But, he explained, it is critical that they are not placed above the surface of the road because otherwise snowplows will crush them.
Because it is so important that the grates and frames do not get hit by snowplows, they are sometimes recessed between an eighth of an inch and a quarter of an inch. This still provides a smooth ride for cars but also means they do not obstruct snow plows, Chase said.
The reader also may have been noticing the recessed storm sewer inlet grates in the curbs, Chase added. These are recessed in order to help the grates take in water. Those recessions are created by gradually slanting the curb downward over a distance of 12 to 18 inches.
Brookfield NOW .com
Want us to track down a rumor?
Fix a problem? Send an email to
firstname.lastname@example.org or visit
BrookfieldNOW.com/Ask to post a question or see some answers.
Your link to the biggest stories in the suburbs delivered Thursday mornings.
Enter your e-mail address above and click "Sign Up Now!" to begin receiving your e-mail newsletter Get the Newsletter!
- Brookfield Ask Now: Library staff reorganization promotes flexibility
- Ask Now: When will the TIF referendum topic be discussed?
- Ask Now: Why are Christmas trees allowed in public spaces?
- Ask Now: What is MSO?
- Ask Now: Can you burn leaves in Brookfield?
- Ask Now: Why are Brookfield utility bills going to West Allis?
- Ask Now: Wisconsin Ave. extension still in the works?
- Brookfield Ask Now: Why are lanes closed on Bluemound Road?
- Ask Now: Do park hours change with the seasons?
- Ask Now: More roundabouts coming?
- Ask Now: How do I get an idea to the common council?
- Ask Now: Soil samples taken at Pilgrim and Gebhardt in Brookfield
- Brookfield and Elm Grove Ask Now: Why the yellow blinking arrows?
- Brookfield and Elm Grove Ask Now: What's up with Fun World?
- Ask Now: Does the city get involved when similar businesses seek to open?
- Ask Now: What is going on with the Capitol Drive water tower?
- Ask Now: Does the city police department collect prescription drugs?
- Ask Now: Who reviews city architecture?
- Ask Now: Who guards the lifeguards from the sun?
- Ask Now: Fewer meetings? Same pay?