Project Start Date: March 30, 2026
Estimated Completion: November–December 2026
Missouri American Water will begin the N. Berry Road Water Main Replacement Project in late March 2026. This infrastructure improvement project is being coordinated with St. Louis County and the City of Glendale to improve water system reliability and prepare the corridor for future roadway improvements.
Project Purpose and Background
The project area extends along N. Berry Road, between Gramercy Place and W. Lockwood Avenue. Currently, three cast iron water mains run parallel beneath N. Berry Road: a 20-inch main installed in 1935, a 12-inch main installed in 1923, and a 4-inch main installed in 1915. Each line has experienced multiple breaks, with an increase in failures in recent months, resulting in water service interruptions and, in some cases, property flooding.
To address these issues, Missouri American Water will install a new 24-inch ductile iron water main to replace and consolidate the existing system. Once the new main is in service, the three older mains will be taken out of service.
This reconfiguration will increase system reliability, reduce the likelihood of emergency repairs, and support future roadway improvements.
Construction Overview
Supervising Agency: Missouri American Water
Construction will be completed in phases along N. Berry Road. Work will require full roadway closures within active work zones for excavation, pipe installation, and service connections. All disturbed areas will be temporarily restored during construction and permanently restored upon project completion.
Schedule
March–November/December 2026
Work hours are expected to be Monday through Friday, 7:00 a.m. to 5:00 p.m. Weekend or extended hours may be used if necessary to meet the schedule or restore service connections.
Traffic and Access Impacts
Beginning the week of March 30, 2026, N. Berry Road will be closed to all traffic from Gramercy Place to Big Bend Boulevard as Missouri American Water Company Crews begin water main replacement work. The work will begin near Gramercy Place and proceed south until complete. This road closure will cause detour routes to be in effect. Missouri American Water will begin posting warning signs, detour routes, etc. during the week of March 16, 2026. Missouri American Water anticipates that the closure will remain in place for 4-6 months.
Motorists traveling between I-44 and Manchester Road are encouraged to use the detour route via W. Lockwood Avenue, N. Sappington Road, and W. Kirkham Avenue. Access to all homes and driveways will be maintained. Short-term driveway restrictions may occur when work is directly in front of a property, but crews will notify residents in advance and restore access as quickly as possible.
Pedestrian and School Access
The City of Glendale, the staff of Mary, Queen of Peace, and the Kirkwood School District are working closely to increase awareness of the potential for the increase of traffic near both school campuses, especially during arrival and dismissal times on school days. Glendale Police will have an increased presence in the area during these times. We ask for the cooperation of all motorists, cyclists and pedestrians in staying alert for the additional traffic and following the directions of posted traffic control (signs and crosswalk attendants).
Remember:
- Stay alert: Pay attention to flaggers, workers, and equipment, and be prepared for sudden stops.
- Slow down: Follow all posted speed limits and adjust for traffic flows and weather conditions.
- Give yourself some space: Leave at least two seconds of braking room between other vehicles.
Water Service Impacts
No long-term water outages are anticipated. Individual service transfers may require brief interruptions lasting less than one hour. Affected residents will receive advance notice of any temporary service disruption via door hangers or direct communication.
Customers who are not opted in to receive general alerts from Missouri American Water can do so through their MyWater account at www.missouriamwater.com or by calling 1-866-430-0820. You can report water related emergencies via the Missouri American Water website or in your MyWater account. Not a direct customer and still want to be notified? Sign up for Missouri American Water's CodeRED to receive water-related alerts. Text WATER to 99411 or visit AWCodeRed.com.
STEP 1: Log in to or sign up for MyWater at amwater.com/mywater.
STEP 2: Click the Edit Info button.
STEP 3: Click the Change button under Alert Settings.
Note: Standard text, data and phone rates may apply.
Residents may notice temporary water discoloration caused by harmless sediment after transfer work is complete. Running cold water for a few minutes typically clears the line.
Restoration and Cleanup
All disturbed pavement, curb, and lawn areas will be restored following completion of the work. Temporary asphalt patches will remain in place until final surface restoration occurs in coordination with the St. Louis County Highway Department. The project area will be cleaned and returned to its pre-construction condition.
Community Communication
Residents with questions or concerns can contact Missouri American Water’s Customer Service Center at 1-866-430-0820 or visit www.missouriamwater.com for project updates. For project updates, please visit https://www.amwater.com/moaw/News-Community/Local-Projects/north-berry-road-water-main-replacement-project
Thank You for Your Patience
St. Louis County, the City of Glendale, and Missouri American Water appreciate the community’s patience and understanding during this important improvement project. Once completed, the upgraded water system will provide greater reliability, improved water quality, and long-term service stability for residents along N. Berry Road.
Grammercy Place to Willow Oak Lane (shown in green on the map below):
Missouri American Water has completed the installation of the new water main in this area.
- Missouri American Water crews have completed the transfer of all residential and commercial water service lines from the old water main to the new one.
- Permanent pavement restoration work is complete in this area.
- No further work is expected in this area.
Willow Oak Lane to Trevillian Ave. (shown in yellow on the map below):
- Missouri American Water has completed the installation of the new water main in this area.
- All commercial and private property connections, as well as the intersecting street connections have been completed.
- No further excavation or plumbing work is expected in this area.
- Concrete has been poured to the pavement surface, allowing traffic to flow normally, however permanent pavement restorations are forthcoming.
Trevillian Ave. to Lockwood Ave. (show in red on the map below):
- N. Berry Rd. is closed between the 2 sections of Lockwood Ave. (north of Mary Queen of Peace and south of Mary Queen of Peace)
- Water crews are excavating N. Berry Rd. to install the new water pipe and prepare for commercial, private, and side street connections.
- When crews reach the south section of Lockwood Ave., the intersection will be closed for approximately 3-4 weeks. Major detours will be conducted during this time.
- For detailed information regarding the closure of the N. Berry Rd./Lockwood Ave. intersection, please click the “Intersection Closure” drop-down on the main menu.
The main detour route remains in place (shown in orange on the map below)
Drivers are encouraged to utilize:
- Main Detour:
- Kirkham Ave.
- N. Sappington Rd.
- Lockwood Ave.
Or:
- Mid-Block (Secondary) Detour:
- Algonquin Estates Rd.
- Devon Rd.
- E. Essex Ave.
Missouri American Water and Algonquin Country Club have been in close contact. AGC has instructed its members to access the club from the north side. 
Beginning Monday, July 27, 2026, the intersection of N. Berry Road and Lockwood Avenue will be closed to all traffic to allow Missouri American Water crews to excavate the pavement and install a new water main through the intersection.
Missouri American Water anticipates reopening the intersection on Friday, August 21, 2026.
The map below highlights in orange the detour routes that will be in effect during the closure.
Northbound N. Berry Road Traffic
Northbound traffic on N. Berry Road traveling from I-44 will be detoured east along Hollywood Place to Lockwood Avenue, north of Mary Queen of Peace School. Traffic will then proceed west on Lockwood Avenue to reconnect with N. Berry Road, where motorists can then continue north.
Southbound N. Berry Road Traffic
Southbound traffic traveling from Manchester Road/Kirkham Avenue is encouraged to use the primary detour route via Kirkham Avenue to reach N. Sappington Road. A secondary detour is available via Algonquin Estates Road and E. Essex Avenue to reach N. Sappington Road.
Southbound N. Sappington Road Traffic
Southbound traffic on N. Sappington Road will be directed to continue south at Lockwood Avenue until reaching Big Bend Road. From there, motorists may travel east or west to access I-44.
Eastbound Lockwood Avenue Traffic
Eastbound traffic on Lockwood Avenue coming from Kirkwood will be detoured south on N. Sappington Road to Big Bend Road. From there, motorists may travel east or west to access I-44.
Westbound Lockwood Avenue Traffic
Westbound traffic on Lockwood Avenue coming from Webster Groves can continue north at N. Berry Rd. to reach Manchester Rd./Kirkham Ave. To reach I-44, traffic will be detoured south on Hollywood Ln. to reach N. Berry Rd. and continue south to reach I-44 or Big Bend Rd.
