Soldier Pile Wall - precast conc lagging

[BurgoEng]

I am designing a Soldier Pile retaining wall for a roadway with a change in retainment from 5ft to 30ft. We want to use concrete panels for the lagging rather than timber as this will be a permanant structure, but several searches on Google turn up nothing useful as far as manufacturers go. Does anyone know of companies that do this? We are thinking the panels would be similar to those used for sound barriers on highways, but we need to show details and manufacturures on our drawings.