Falling-Weight Deflectometer Assessing Local Streets

Truck hauling a Falling Weight Deflectometer. Courtesy/LAC


Los Alamos County recently entered into a contract with IMS Infrastructure Management Services to perform Pavement and Asset Management Services for County roadways. 

In late June, IMS completed the first phase of pavement data collection using a van mounted device known as a Laser Road Surface Tester.

The second phase of surveys will commence this week which consists of establishing the load carrying capacity of roadways using a device known as a Falling Weight Deflectometer or FWD. This device provides nondestructive testing to assess the overall pavement condition. Data collected will be used to determine the pavement strength, load transfer capabilities, and identify properties of the base and sub-grade. IMS has subcontracted this work to Ground Engineering of Colorado.

These surveys and the detailed study that follow will help determine the types of road maintenance required, while assisting in the planning and prioritization of projects as part of the County’s Roadway Capital Improvements Program.

Direct questions or concerns to the Public Works Department at 505.662.8150 or send an email to LACPW@lacnm.us.


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