For a few years now the Metropolitan St. Louis Sewer District (aka MSD) has been working on a major sewer project under Bates Street in South St. Louis. They seem to be nearing completion and while the area should have better drainage than before not everything is left better than it was.
Above you can see a metal grate over a sewer inlet, with one being tilted creating a potential trip hazard.
Metal grates, in general, can present potential hazards. Women’s shoes can get caught in the openings, possibly causing them to fall. Someone using a cane can have the tip get caught as well. In wet weather, the smoth metal surface can be slippery. It is considered a good idea to keep metal grates (be they for sewer or even urban tree grates) out of the normal pedestrian path of travel.
From the US Access Board’s Public Rights-of-Way Design Guide:
3.2.4.1 Gratings
Other surface features that affect accessibility include gratings and similar fittings that have horizontal openings or gaps that exceed 1/2 inch (13 mm) in the direction of travel. Such gaps can capture the small front wheel of a wheelchair or the end of a crutch, suddenly stopping forward progress and possibly leading to a tip or fall. Additionally, the frame angles in which access covers and gratings are set often result in significant gaps when installed in a sidewalk.
Metal gratings are of particular concern to pedestrians who use walking aids. When wet, the grids can be extremely slippery, and the elongated openings can become a sliding track for the tip of a crutch or cane. Slip-resistant finishes or nonmetallic materials are available at additional cost for installations where the location or extent of exposed gratings may pose a problem for pedestrians, such as on pedestrian bridges and overpasses. Where possible, gratings and similar sidewalk fittings should be located off the travel path. Note, however, that tree gratings–unless part of the pedestrian circulation route— need not meet surfacing provisions.
Slots in grates, if used, should never be in the direction of travel.
Before someone attempts to tell me nobody walks in this area let me just say it gets a good bit of pedestrian traffic. It is true that three out of the four corners of this intersection have been encroached upon by anti-pedestrian development but this is a dense urban area where people do walk. Take a look at the Google map to see for yourself, if you don’t believe me.
Throughout the city and our suburban areas I could find numerous examples of poorly designed and built area that are likely far more dangerous than this one, but that is not the point. When areas receive millions of dollars of new infrastructure work I expect public agencies to do a better job with respect to the people that will use the facilities once completed. This is poor engineering/construction and is unacceptable in my view.
UPDATE 4/26/2007 @ 8:15am:
After making the above post I contacted MSD via email with a link to this post. This morning I received the following email message from their customer serivice department:
An MSD crew was out yesterday to inspect the grate that is tilted up. The crew found the angle iron holding up one of the grates has broken away causing the grate to tilt. Mr. Steve Welnick has been informed of this. Mr. Welnick is in charge of the Grand/Bates project.
I was also given Mr. Welnick’s cell number and I spoke to him this morning, we had a very good conversation. He is working on getting a crew to weld a new angle iron so the grate will be properly supported. Mr. Welnick also indicated he reviewed the drawings (he has only been on this project since January) and it was indeed built as engineered. I asked that he have a conversation with their engineers about ADA requirements and the use of grates.
UPDATE 4/26/2007 @ 8:45am:
Mr. Welnick called me back indicating the inlet grates were existing — they were shown on their drawings only because they were already there. He is looking to see if that was an earlier MSD project or possibly from the city’s Board of Public Service.
UPDATE 4/26/2007 @ 4:30pm:
OK, now MSD is telling me that Jack is to blame? You know, the one with the big white ball head. Apparently the Jack in the Box on the corner was responsible for the grate construction. MSD is talking with the Dept of Streets as well as Jack in the Box. In the meantime, I believe MSD got the grate level so the tilt would not contribute to someone falling.