A Crash Course for Load Ratings and Bridge Posting Signs

By David Johnson, PE Have You Ever Wondered What Those Weight Signs Posted at the Ends of a Bridge Mean? These weight posting signs display the maximum safe weight for a vehicle. Since there are a number of different vehicle sizes and shapes on the roads today, different types of vehicles called “Legal Loads” are… Read More »

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The Many Benefits of Elevation-derived Hydrography

By Tyler Kaebisch Hydrography data is crucial to a wide range of essential applications, from infrastructure management to flood mitigation. State agencies, soil and water conservation districts, engineering departments, and more all rely on stream and river data. About the Expert: Tyler Kaebisch is a project manager in the aerial mapping group at Ayres, He’s… Read More »

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Managing Stormwater in Impervious Environments

By Pete Kolaszewski, PE Water that collects after a rain or snowmelt must go somewhere. It may pool and eventually evaporate and/or seep into the ground. It may follow the contour of the land and run into a stream or ditch. In either case, vegetation slows the water’s flow, promotes infiltration, and helps filter out… Read More »

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