In 2017, MDOT engaged Mendrop to provide Phase “A” final right-of-way plans, a stream stability study, Phase II Bridge Scour Analysis, and countermeasure design recommendations for the Fair River in the vicinity of US 84 Bridges #74.9 A and B in Lincoln County, MS. Countermeasure alternatives considered included channel realignment, relocation of a bend with longitudinal stone toe revetment and channel bank revetment, and steel sheet pile wall at the existing road emankment. Burns, Cooley, Dennis, Inc. provided bed and bank material analysis at the site.

The Mississippi Department of Transportation (MDOT) proposed a plan to widen U.S. Highway 11 between Cayten Street and Lakeshore Drive from a 3-lane section to a 4-lane divided boulevard through Picayune in Pearl River County, MS. Mendrop Engineering Services, LLC (Mendrop) was retained by MDOT to perform a hydrologic and hydraulic analysis of the proposed storm drainage system for the roadway widening. The study included the development of a hydraulic storm sewer model of the storm drainage system as currently designed in order to evaluate and document the hydraulics of the system.

Mendrop Engineering Resources, LLC was selected by the Mississippi Department of Transportation (MDOT) to prepare conceptual, preliminary, and final bridge hydraulic recommendations and bridge plans for Jourdan River, Bayou Talla, and a tributary of Bayou Talla on a proposed project to bypass Kiln, MS by relocating a portion of State Route 43/603. Initial conceptual bridge recommendations for the bridges over Jourdan River and Bayou Talla were originally prepared by Mendrop during the Environmental Planning Phase of this project.

Mendrop Engineering Resources, LLC (MER) was selected by the Mississippi Department of Transportation (MDOT) to provide hydraulic recommendations and bridge plans for the hydraulic crossings of Mattie Creek (Bridge #33.2) and Nelson Creek (Bridge #33.6) on State Route 310 (SR 310). In a separate contract, MER was selected to develop Phase “A” Final Right-of-Way plans for the bridge replacements (Bridges # 33.2 and #33.63) on SR 310 in Panola County.

Mendrop Engineering Resources, LLC was selected by the Mississippi Department of Transportation to evaluate the potential for scour and develop a plan of action at the bridge site on U.S. Interstate Highway 55 (I-55) Bridge #266.8A & B over Hickahala Creek in Tate County. The bridge scour evaluation study was performed in four phases, including hydrologic, hydraulic, and scour analysis and a geotechnical and structural assessment. Burns Cooley Dennis, Inc. was subcontracted to perform subsurface exploration at the site, while Amec Foster Wheeler (AFW) was subcontracted to perform the structural assessment. Mendrop then utilized the data and analysis to provide MDOT with a recommended plan of action.

The Homochitto River has undergone significant channel degradation, extensive meandering, and lateral movement since the 1940s, and SR 33 bridges at this location have collapsed three times.

Canadian National Railroad (CN) contracted Mendrop to evaluate the hydrologic conditions and hydraulic characteristics of existing bridges and culverts in order to provide guidance for replacement.

The downstream migration of an upstream channel bend was jeopardizing the embankment of State Route 42 and Bridge No. 107.9 over the Chickasawhay River.

Significant rain in February of 2020 caused landslides along Redwood Road in Vicksburg, Mississippi, resulting in approximately 1,000 feet of damage. Mendrop was contracted to provide erosion control plans, hydraulic design analysis, and roadway design plans.