The proposed project is located on I-40 east interchange in Oklahoma County, Oklahoma. This project is part of the I-40 Crosstown Relocation Project.  Pavement, flyovers, and ramps are crisscross around this area. 

BETI performed ground penetration radar (GPR), failing weight deflectometer (FWD) test and shoulder soil survey for the proposed project. To minimize the traffic delays, most of the work were completed on nights and weekends.  The Ground Penetrating Radar (GPR) tests were performed on the existing pavement.  Pavement cores were performed to correlate the GPR data and the pavement thickness. The backcalculation analysis of the FWD tests were performed using Modulus 5.1 program.  Based on the GPR results, the project is divided into aforementioned sections.  Two different load level, which included 10 kips and 18 kips, were used during the FWD tests. 

The proposed project was located on the existing I-40 in Caddo County, Oklahoma. BETI completed a falling weight deflectometer (FWD) survey and pavement evaluation for the I-40 from MP 86 to MP 104 in Caddo County, Oklahoma.

The existing I-40 consists of four-lanes divided interstate highway. BETI performed the pavement evaluation, ground penetration radar (GPR) and FWD tests on the outside lanes of both eastbound and westbound lanes. The FWD tests were performed on the existing pavement on the outside wheel path.  The spacing between each test points was 250 feet in staggered pattern.  Locations of the test points were marked in the field by BETI field crews.  Additionally, GPR tests were performed on the existing pavement.  Pavement cores were also performed on the outside lanes to correlate the GPR data and the pavement thickness. The backcalculation analysis of the FWD tests were performed using Modulus 5.1 program.