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Status Future consideration
Categories OpenBridge Designer
Created by Guest
Created on Feb 12, 2026

LEAP BRIDGE CONCRETE: Multiple Truck Types when Autogenerating LL

Currently, when multiple trucks (e.g., HL93 and a Permit truck) are selected in the Auto-Generate Live Load tool, the software identifies the heaviest vehicle and applies it to every loaded lane. I am requesting an update that allows the software to generate a mixed-lane configuration for the Strength II limit state. OklahomaDOT requires placing one permit truck in one lane while the remaining lanes have an HL93 for Strength II. The program should place one Permit truck in one lane and HL93 in the remaining lanes. The engine should iterate through 2, 3, 4, and n lanes loaded and dynamically position the permit truck in every possible lane, including placing the permit truck between HL93 to ensure maximum force effects are captured when designing each structural member. The software should support this mixed setup automatically rather than defaulting to the heaviest truck in all lanes.

Civil Product Used OpenBridge Designer