06/17/2026
As part of the Village of Oak Lawn’s ongoing efforts to address long-standing flooding concerns, a new stormwater detention system is being constructed to manage high-volume storm events and improve overall system performance. This work includes the fabrication and supply of custom precast junction chambers by Utility Concrete Products, designed to accommodate major flow transitions between existing infrastructure and the new system.
UCP produced two custom junction chambers, with the larger of the two measuring 28’ x 14’ and engineered to connect multiple large-diameter storm lines. These units serve as key distribution points, directing flow and managing system capacity within the detention network.
The size and complexity of the pipe penetrations, combined with strict coordination requirements for inverts, rims, and elevations, required fully custom fabrication using Symons panel formwork rather than standard precast forms. The heaviest section of this structure alone weighed approximately 59,550 pounds, with the full assembly weighing upwards of 183,000 pounds.
This type of infrastructure demands careful planning and precise ex*****on at every stage. Projects like this continue to influence how large-scale stormwater systems are designed, coordinated, and constructed in the field.
