Cross-Drainage Structures Sample Clauses

Cross-Drainage Structures. The Engineer shall provide the following services: 1. Determine drainage areas and flows for cross culvert drainage systems. 2. Determine the sizing of the drainage crossings. The scope may include extending, adjusting or replacing non bridge-class culvert crossing or crossings as specified in the Work Authorization. Develop designs that minimize the interference with the passage of traffic or cause damage to the highway and local property in accordance with the State’s Hydraulic Design Manual, District criteria and any specific guidance provided by the State. Cross drainage design shall be performed using HY-8 or HEC RAS.
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Cross-Drainage Structures. The Engineer shall provide the following services: 3.1.1. Determine drainage areas and flows for cross culvert drainage systems.
Sample 1Sample 2Sample 3See All (4)
Cross-Drainage Structures. The Engineer shall provide the following services:
Sample 1Sample 2Sample 3
Cross-Drainage Structures. The Engineer shall provide the following services: 1. Determine drainage areas and flows for cross culvert drainage systems. 2. Determine the sizing of the drainage crossings. The scope may include extending, adjusting or replacing non bridge-class culvert crossing or DocuSign Envelope ID: 8F4C5F80-CEA4-4B7A-AA13-EF50310E0F8C crossings as specified in the Work Authorization. Develop designs that minimize the interference with the passage of traffic or cause damage to the highway and local property in accordance with the State’s Hydraulic Design Manual, District criteria and any specific guidance provided by the State. Cross drainage design shall be performed using HY-8 or HEC RAS.
Sample 1
Cross-Drainage Structures. The Engineer shall develop culvert plan/profile sheets for up to twenty (20) cross culverts.
Sample 1
Cross-Drainage Structures. The Engineer shall provide the following services: 1. Determine drainage areas and flows for cross culvert drainage systems. 2. Determine the sizing of the drainage crossings, including extending, adjusting or replacing non bridge-class culvert crossing or crossings. Develop designs that minimize the interference with the passage of traffic or cause damage to the highway and local property in accordance with the State’s Hydraulic Design Manual, District criteria and any specific guidance provided by the State. Cross drainage design shall be performed using HY-8 or HEC-RAS.
Sample 1
Cross-Drainage Structures. The Engineer shall provide the following services: 1. Determine drainage areas and flows for cross culvert drainage systems. Culverts listed below are those shown on the current approved schematic and represent the anticipated required major drainage structures. Additional structures shall be designed to the required drainage frequencies. • 1-5' X 4' box at 113+85 • 1-5' X 3' box at 155+85 • 2-4' X 2' boxes at 149+95 • 2-4' X 2' boxes at 157+65 • 2-4' X 2' boxes at 151+70 • 3-8’ X 6’ boxes at 174+35 • 3-8’ X 6’ boxes at 173+10 • 3-8’ X 6’ boxes at 169+55 • 10-5’ X 2’ boxes at 210+25 • 6-6’ X 3’ boxes at 226+65 • 10-8’ X 4’ boxes at 222+85 • 10-8’ X 4’ boxes at 222+45 • 1-4’ X 2’ box at 246+70 • 1-6' X 3' box at 270+55 • 1-4' X 2' box at 263+50 • 2-5’ X 3’ boxes at 254+80 • 2-4' X 2' boxes at 252+55 • 1-8’ X 4’ box at 150+65 • 1-10' X 4' box at 200+40 • 3-5' X 3' boxes at 192+90 • 3-5' X 3' boxes at 197+50 • 3-5' X 3' boxes at 206+70 • 1-5' X 3' box at 240+45 • 5-6’ X 4’ boxes at 302+00 • 6-10' X 5' boxes at 295+65 • 1-7’ X 3’ box at 262+60 • 7-9' X 5' boxes at 261+65 • 3-10' X 10' boxes at 348+80 • 1-7’ X 3’ box at 373+90 • 2-4' X 2' boxes at 412+85 • 2-4' X 2' boxes at 412+80 2. Determine the sizing of the drainage crossings. The scope may include extending, adjusting or replacing non bridge-class culvert crossing or crossings as specified in the Work Authorization. Develop designs that minimize the interference with the passage of traffic or cause damage to the highway and local property in accordance with the State’s Hydraulic Design Manual, District criteria DocuSign Envelope ID: E0E3AD65-416A-4906-A2FD-ED83ABE18456 and any specific guidance provided by the State. Cross drainage design shall be performed using HY-8 or HEC RAS. 3. Identify areas requiring trench protection, excavation, shoring and de-watering. 4. Prepare large and small drainage area maps. 5. Prepare hydrologic and hydraulic calculation sheets for all applicable drainage elements/systems. 6. Prepare plan/profile sheets for storm drain systems. Show spot ditch elevations to depict conveyance. 7. Provide ditch information in a tabular format on plan sheets. Information included will be: ditch name, station and offset, ditch slope, and cross-section geometry. For extreme event and design event provide: flow rate, velocity, normal depth, freeboard, and calculated shear stress. Ditch flowline will be shown on roadway cross sections. 8. Prepare cross street and driveway culvert design. Plan/p...
Sample 1
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Cross-Drainage Structures. The Engineer shall provide the following services: 1. Validate and determine as necessary drainage areas and flows for cross culvert drainage systems that were developed in the schematic portion of this project. DocuSign Envelope ID: 272D98F7-7E9E-42C2-A06F-E7D2542DAFD3 Contract No. 14-7SDP5001 2. Determine the sizing of the drainage crossings, including extending, adjusting or replacing non bridge-class culvert crossing or crossings. Develop designs that minimize the interference with the passage of traffic or cause damage to the highway and local property in accordance with the State’s Hydraulic Design Manual, District criteria and any specific guidance provided by the State. Cross drainage design shall be performed using HY-8 or HEC-RAS. Specifically verify the impact of the diverted and re-routed 30 cfs from the Willow Springs culvert to the Willow Springs bridge crossing.
Sample 1
Cross-Drainage Structures. The Engineer shall provide the following services: A. Determine drainage areas and flows for cross culvert drainage systems. B. Determine the sizing of the drainage crossings. Develop designs that minimize the interference with the passage of traffic or cause damage to the highway and local property in accordance with the State’s Hydraulic Design Manual, District criteria and any specific guidance provided by the State. Cross drainage design shall be performed using HY-8 or HEC RAS.
Sample 1

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  • Drainage ▪ Prevent silt bearing road surface and ditch runoff from delivering sediment to any streams or wetlands. ▪ Maintain rolling dips and drivable waterbars as needed to keep them functioning as intended. ▪ Maintain headwalls to the road shoulder level with material that will resist erosion. ▪ Maintain energy dissipaters at culvert outlets with non-erodible material or rock. ▪ Keep ditches, culverts, and other drainage structures clear of obstructions and functioning as intended. ▪ Inspect and clean culverts at least monthly, with additional inspections during storms and periods of high runoff. This shall be done even during periods of inactivity. ▪ Perform preventative maintenance work to safeguard against storm damage, such as blading to ensure correct runoff, ditch and culvert cleaning, and waterbar maintenance.

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