As part of the ODOT shared cost agreement, The City of Bixby contracted CGA Engineers, Inc. to provide design improvements for the un-signalized intersection project located in the City of Bixby, OK. The main design tasks were broken into topographic survey, soil investigation, hydrology and hydraulics, development of design alternatives and traffic signalization. The project is about 0.5 mile. The project scope involves the following major design elements:
The project scope involves major roadway reconstruction and widening of existing two lane asphalt paved open road bar ditches drainage system to a three lane close fully signalized roadway intersection. The preferred alternative was a ten (10) inch Portland Cement Concrete pavement over eight (8) inches of ODOT Type A aggregate base typical section. The width of the pavement varies from section to section from 24 feet wide with paved shoulders to 40 feet curb and gutter section. New pavement markings and traffic control plans were designed to meet current MUTCD stripping and signalization standards. The construction plans included summary of pay items tables, typical sections, erosion control, survey data, right of way ownership, the plan and profile sheets, traffic signal plans, striping plans, construction sequence plans, details, and cross sections.
A Hydrology and Hydraulics (H&H) analysis was done to evaluate the existing open drainage system. Stormwater improvements included drainage area map, stormwater plan and profiles, inlet and pipe analysis and design. The design included a combination of an open drainage system, connecting existing underground pipes and evaluating critical sections to minimized flooding issues. This project also incorporates existing stormwater conveyance from the nearby subdivision south east side of the intersection drainage basin into the on project drainage. The project required ADT counts and traffic analysis and the design of a new traffic signal system with emergency operations capacity and video signal system. The total estimated engineer's construction cost for this project is approximately $966,998.00.
- Traffic signal system
- street roadway surface widening
- Waterline improvements
- Storm sewer improvements
- ROW research and Legal description of Prop ROW
- Construction sequencing
- ODOT Coordination
- Temporary and permanent traffic control
The project scope involves major roadway reconstruction and widening of existing two lane asphalt paved open road bar ditches drainage system to a three lane close fully signalized roadway intersection. The preferred alternative was a ten (10) inch Portland Cement Concrete pavement over eight (8) inches of ODOT Type A aggregate base typical section. The width of the pavement varies from section to section from 24 feet wide with paved shoulders to 40 feet curb and gutter section. New pavement markings and traffic control plans were designed to meet current MUTCD stripping and signalization standards. The construction plans included summary of pay items tables, typical sections, erosion control, survey data, right of way ownership, the plan and profile sheets, traffic signal plans, striping plans, construction sequence plans, details, and cross sections.
A Hydrology and Hydraulics (H&H) analysis was done to evaluate the existing open drainage system. Stormwater improvements included drainage area map, stormwater plan and profiles, inlet and pipe analysis and design. The design included a combination of an open drainage system, connecting existing underground pipes and evaluating critical sections to minimized flooding issues. This project also incorporates existing stormwater conveyance from the nearby subdivision south east side of the intersection drainage basin into the on project drainage. The project required ADT counts and traffic analysis and the design of a new traffic signal system with emergency operations capacity and video signal system. The total estimated engineer's construction cost for this project is approximately $966,998.00.