BRIDGE DESIGN

In 1961, we started out designing bridges in Topeka, Kansas. Today, CFS performs inspection, design and construction phase services for thousands of bridges throughout the Midwest. Whether it’s a complex design for a separated highway or a simple pedestrian bridge or stream crossing, CFS will determine and execute the most suitable design and construction approach. We utilize the latest in structural analysis and design tools in order to achieve the safest, most efficient bridge design. In addition, CFS has provided load rating and biennial inspection services for thousands of existing bridges. We perform structural inspections on over 800 bridges each year.

PROJECTS

Main Street Bridge Replacement | Cass County, Missouri

The bridge was located 2.0 miles south and 1.2 miles east of the intersection of Route O & Route W.

 

Firm Responsibilities: 

CFS provided design survey, hydrology, right-of-way and easement descriptions, road and bridge design, and construction inspection  for replacement of a bridge over Coldwater Creek.  

Stokes Road Bridge | Vernon County, Missouri

The new Stokes Road Bridge replaces an existing low  water crossing at Little Dry Wood Creek located southwest of Nevada. The previous crossing was located in the center of an erratic stream alignment, as well as the Stokes Road roadway alignment which was constructed in a tight “S” curve configuration.  The previous roadway alignment at the creek precludes the use of a conventional span-type bridge structure that has the ability to handle the projected flood discharge.

 

CFS selected a new, straighter alignment that does in fact handle the discharge - yet lends itself to a 100’ simple one-span structure.  The entire roadway including the bridge is only 834’ long, thus providing Vernon County with an economical roadway/bridge solution.

 

This project consisted of the design of approximately 830 feet of Stokes Road in Vernon County, Missouri.  The previous low water crossing on Stokes Road was removed, and the roadway was realigned with a single span 99’-6” Pre-stressed Concrete I-Girder Bridge designed to cross traffic over Little Dry Wood Creek. Construction included clearing, removal of improvements, grading, paving, erosion control, traffic control, permanent signing, and pavement marking. 

 

Responsibilites: 

CFS Engineers provided environmental permitting services and coordinated design with Vernon County and MoDOT. CFS was responsible for preparing construction plans and bid documents, and  also provided construction services and inspection for Vernon County during construction.

Sloan Creek Superstructure Replacement | Cape Girardeau, Missouri

CFS was responsible for the design, plans, cost estimates and job special provisions for the superstructure replacement of Big Bend Road over Sloan Creek. This bridge is located within 400 yards of the Mississippi River and is impacted by backwater flooding. We designed a steel superstructure to replace the existing prestressed concrete double-tee superstructure. By using steel, we were able to match the existing grade while minimizing the load put on the existing substructure. Included in this project was the design of repairs to a slope failure adjacent to the bridge.

Firm Responsibilities: Bridge preliminary design, hydraulic analysis, bridge final PS&E, Geotechnical analysis of slope failure, design of slope repair features, construction inspection of the bridge and slope repair

Crenshaw Road Bridge | Greene County, Missouri

CFS designed a replacement structure for the aging Crenshaw Road Bridge over the Farmers Branch Creek, on the southeastern side of Springfield, Missouri, for the Greene County Public Works Department.  The old bridge had originally been built in 1937 as part of the WPA project. The existing 50' structure with a central support column was replaced with a 60' free-span bridge that also included safety railing and upgrades to the approach roadway.  Design included a hydrologic and hydraulic analysis using HEC-HMS and HEC-RAS modeling, stream bank stabilization evaluation and protection, and evaluation of scouring and overflow effects during roadway overtopping events (due to site restrictions, bridge could only pass a 10-year storm). 

 

This project consisted of the design of approximately 270 feet of Crenshaw Road in Greene County, Missouri.  Construction includes clearing, removal of improvements, grading, paving, erosion control, traffic control, permanent signing, and pavement marking.  The project also includes design of a 63’-6” Composite Prestressed Concrete I-Girder Span Bridge. CFS Engineers provided environmental permitting services and coordinated design with Greene County and MoDOT.  CFS is responsible for providing construction plans and bid documents.