748.2 Roadway Design Criteria - Revision history

Smithk: Per TP, updated Major Highway System map

2022-06-03T13:17:59Z

Per TP, updated Major Highway System map

← Older revision		Revision as of 08:17, 3 June 2022
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	==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==		==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==

	===748.2.2.1 [[media:144 Major Highway System ~~2021~~.pdf\|Major Routes]]===		===748.2.2.1 [[media:144 Major Highway System 2022.pdf\|Major Routes]]===

	On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.		On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.

Smithk: updated major highway system map

2021-06-04T15:50:49Z

updated major highway system map

← Older revision		Revision as of 10:50, 4 June 2021
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	==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==		==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==

	===748.2.2.1 [[media:144 Major Highway System.pdf\|Major Routes]]===		===748.2.2.1 [[media:144 Major Highway System 2021.pdf\|Major Routes]]===

	On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.		On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.

Smithk: /* 748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency) */ updated link

2020-09-29T19:52:56Z

748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency): updated link

← Older revision		Revision as of 14:52, 29 September 2020
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	==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==		==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==

	===748.2.2.1 [~~http~~:~~//sharepoint/systemdelivery/TP/sysanlysis/dmas/Shared%20Documents/Maps/MajorHighwaySystem8302015~~.pdf Major Routes]===		===748.2.2.1 [[media:144 Major Highway System.pdf\|Major Routes]]===

	On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.		On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.

EPGsysop: /* 748.2.2.4 Replacement Structures */

2017-04-07T20:16:17Z

748.2.2.4 Replacement Structures

← Older revision		Revision as of 15:16, 7 April 2017
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	===748.2.2.4 Replacement Structures===		===748.2.2.4 Replacement Structures===

	For structure replacements, the lower end (i.e., 100-year) of the hydraulic frequency ranges is used for high volume routes and sites requiring only minimal roadway work. The upper end (i.e., 25-year) of the hydraulic frequency ranges is used for low volume routes and sites requiring extensive roadway work. The replacement structure should be designed ~~such~~ that it does not increase the roadway design frequency.		For structure replacements, the lower end (i.e., 100-year) of the hydraulic frequency ranges is used for high volume routes and sites requiring only minimal roadway work. The upper end (i.e., 25-year) of the hydraulic frequency ranges is used for low volume routes and sites requiring extensive roadway work. The replacement structure should be designed so that it does not increase the roadway design frequency.

	===748.2.2.5 Rehabilitated Structures===		===748.2.2.5 Rehabilitated Structures===

Smithk: /* 748.2.2.1 Major Routes */ updated link

2016-02-02T14:25:58Z

748.2.2.1 Major Routes: updated link

← Older revision		Revision as of 09:25, 2 February 2016
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	==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==		==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==

	===748.2.2.1 [http://sharepoint/systemdelivery/TP/sysanlysis/dmas/Shared%20Documents/Maps/~~MajorHighwaySystem2015~~.pdf Major Routes]===		===748.2.2.1 [http://sharepoint/systemdelivery/TP/sysanlysis/dmas/Shared%20Documents/Maps/MajorHighwaySystem8302015.pdf Major Routes]===

	On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.		On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.

	===748.2.2.2 Minor Routes===		===748.2.2.2 Minor Routes===

Smithk: /* 748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency) */ Per MT, updated link

2015-05-14T19:37:08Z

748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency): Per MT, updated link

← Older revision		Revision as of 14:37, 14 May 2015
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	==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==		==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==

	===748.2.2.1 [http://~~wwwi~~/~~intranet~~/tp/~~documents~~/~~MajorHighway2013~~.pdf Major Routes]===		===748.2.2.1 [http://sharepoint/systemdelivery/TP/sysanlysis/dmas/Shared%20Documents/Maps/MajorHighwaySystem2015.pdf Major Routes]===

	On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.		On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.
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	===748.2.2.6 Project Scope===		===748.2.2.6 Project Scope===

	When applicable, the project file shall include a note indicating that improving the roadway design frequency is outside the scope of the project.		When applicable, the project file shall include a note indicating that improving the roadway design frequency is outside the scope of the project.

	==748.2.3 Overtopping Flood==		==748.2.3 Overtopping Flood==

Smithk: Per Bridge, reorganized and re-titled article for greater clarity. Terminology clarified.

2014-06-09T19:44:42Z

Per Bridge, reorganized and re-titled article for greater clarity. Terminology clarified.

← Older revision		Revision as of 14:44, 9 June 2014
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	[[Image:748.2 Photo Roadway Overtopping2.jpg\|thumb\|Flash Flooding on Rt. F Barton County ~~on June 25, 2008~~\|400 px]]		[[Image:748.2 Photo Roadway Overtopping2.jpg\|thumb\|Flash Flooding on Rt. F Barton County\|400 px]]
	==748.2.1 ~~Roadway Overtopping Design~~ Criteria==		==748.2.1 Roadside Ditch and Culvert Frequency Criteria==
	On Major Routes, for bridges and boxes, the water level shall be no deeper than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and boxes on interstates use the 100-year event. For pipes, the water level shall be no deeper than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.

	~~On Minor Routes, for bridges~~ and ~~boxes, the water level shall be no deeper than 1 ft~~. ~~below the lowest shoulder point during a 25- to 50-year event~~. ~~For pipes, the water level shall be no deeper than~~ 1 ft. ~~below the lowest shoulder point during a 10- to 25-year event~~.		See [[:Category:749 Hydrologic Analysis#749.2.1.2 Roadside Ditches and Culverts\|EPG 749.2.1.2 Roadside Ditches and Culverts]].

	~~For structural replacements, the upper end of the hydraulic frequency ranges is used for high volume routes and sites requiring only minimal roadway work~~. The lower end of the hydraulic frequency ranges is used for low volume routes and sites requiring extensive roadway work. For new locations, consider the expected traffic volumes and length of roadway to be constructed in selecting an overtopping design frequency. When rehabilitating an existing structure it is not required that the adjacent roadway be raised to meet the roadway overtopping standards for new roads. The replacement structure should be designed such that it does not increase the frequency of roadway overtopping.		==748.2.2 Crossroad Structure Frequency Criteria (Roadway Design Frequency)==

	~~The files include a note indicating that improving the roadway overtopping frequency would have been outside the scope of the project~~.		===748.2.2.1 [http://wwwi/intranet/tp/documents/MajorHighway2013.pdf Major Routes]===

	~~==748~~.~~2.2 Overtopping Flood==~~		On Major Routes, for bridges and box culverts, the water level shall be no higher than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and box culverts on interstates use the 100-year event. For pipes, the water level shall be no higher than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.
	~~The [[:Category:749 Hydrologic Analysis#749.2.3 Overtopping Flood\|overtopping flood]] is distinguished from~~ the ~~design criteria for roadway overtopping~~. ~~The overtopping flood is~~ the ~~actual flood at which flow occurs over~~ the ~~roadway. It is used as~~ a ~~design scour~~ event ~~and as~~ the ~~overtopping~~ event ~~reported on plans~~.

	==748.2.3 High Water Marks==		===748.2.2.2 Minor Routes===

			On Minor Routes, for bridges and box culverts, the water level shall be no higher than 1 ft. below the lowest shoulder point during a 25- to 50-year event. For pipes, the water level shall be no higher than 1 ft. below the lowest shoulder point during a 10- to 25-year event.

			===748.2.2.3 New Locations===

			For new locations, consider the expected traffic volumes and length of roadway to be constructed in selecting the roadway design frequency.

			===748.2.2.4 Replacement Structures===

			For structure replacements, the lower end (i.e., 100-year) of the hydraulic frequency ranges is used for high volume routes and sites requiring only minimal roadway work. The upper end (i.e., 25-year) of the hydraulic frequency ranges is used for low volume routes and sites requiring extensive roadway work. The replacement structure should be designed such that it does not increase the roadway design frequency.

			===748.2.2.5 Rehabilitated Structures===

			When rehabilitating an existing structure it is not required that the adjacent roadway be raised to meet the roadway design criteria for new roads.

			===748.2.2.6 Project Scope===

			When applicable, the project file shall include a note indicating that improving the roadway design frequency is outside the scope of the project.

			==748.2.3 Overtopping Flood==

			The [[:Category:749 Hydrologic Analysis#749.2.3 Overtopping Flood\|overtopping flood]] is the actual flood at which flow occurs over the roadway. It is used as a design scour event and is the overtopping event reported on the plans.

			==748.2.4 High Water Marks==
	The districts shall keep a record of the elevation of high water marks during floods for future design purposes. High water marks should be indicated on roadway structures if possible and labeled with the year of the occurrence.		The districts shall keep a record of the elevation of high water marks during floods for future design purposes. High water marks should be indicated on roadway structures if possible and labeled with the year of the occurrence.

	[[Category:748 Hydraulics and Drainage\|748.02]]		[[Category:748 Hydraulics and Drainage\|748.02]]

Smithk: 748.2 Roadway Overtopping moved to 748.2 Roadway Design Criteria: Confusion of "Roadway Overtopping" and "Overtopping Flood" was addressed

2014-06-09T19:35:19Z

748.2 Roadway Overtopping moved to 748.2 Roadway Design Criteria: Confusion of "Roadway Overtopping" and "Overtopping Flood" was addressed

← Older revision	Revision as of 14:35, 9 June 2014
(No difference)

Smithk: /* 748.2.2 Overtopping Flood */ spelling correction

2011-12-21T20:31:38Z

748.2.2 Overtopping Flood: spelling correction

← Older revision		Revision as of 15:31, 21 December 2011
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	==748.2.2 Overtopping Flood==		==748.2.2 Overtopping Flood==
	The [[:Category:749 Hydrologic Analysis#749.2.3 Overtopping Flood\|overtopping flood]] is distinguished ~~form~~ the design criteria for roadway overtopping. The overtopping flood is the actual flood at which flow occurs over the roadway. It is used as a design scour event and as the overtopping event reported on plans.		The [[:Category:749 Hydrologic Analysis#749.2.3 Overtopping Flood\|overtopping flood]] is distinguished from the design criteria for roadway overtopping. The overtopping flood is the actual flood at which flow occurs over the roadway. It is used as a design scour event and as the overtopping event reported on plans.

	==748.2.3 High Water Marks==		==748.2.3 High Water Marks==

Smithk: Per Bridge, clarification of overtopping flood

2011-03-09T15:13:31Z

Per Bridge, clarification of overtopping flood

← Older revision		Revision as of 10:13, 9 March 2011
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	[[Image:748.2 Photo Roadway Overtopping2.jpg\|thumb\|Flash Flooding on Rt. F Barton County on June 25, 2008\|400 px]]		[[Image:748.2 Photo Roadway Overtopping2.jpg\|thumb\|Flash Flooding on Rt. F Barton County on June 25, 2008\|400 px]]
			==748.2.1 Roadway Overtopping Design Criteria==
	On Major Routes, for bridges and boxes, the water level shall be no deeper than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and boxes on interstates use the 100-year event. For pipes, the water level shall be no deeper than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.		On Major Routes, for bridges and boxes, the water level shall be no deeper than 1 foot below the lowest shoulder point during a 50- to 100-year event. For bridges and boxes on interstates use the 100-year event. For pipes, the water level shall be no deeper than 1 foot below the lowest shoulder point during a 25- to 50-year event. For pipes on interstates use the 50-year event.

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	For structural replacements, the upper end of the hydraulic frequency ranges is used for high volume routes and sites requiring only minimal roadway work. The lower end of the hydraulic frequency ranges is used for low volume routes and sites requiring extensive roadway work. For new locations, consider the expected traffic volumes and length of roadway to be constructed in selecting an overtopping design frequency. When rehabilitating an existing structure it is not required that the adjacent roadway be raised to meet the roadway overtopping standards for new roads. The replacement structure should be designed such that it does not increase the frequency of roadway overtopping.		For structural replacements, the upper end of the hydraulic frequency ranges is used for high volume routes and sites requiring only minimal roadway work. The lower end of the hydraulic frequency ranges is used for low volume routes and sites requiring extensive roadway work. For new locations, consider the expected traffic volumes and length of roadway to be constructed in selecting an overtopping design frequency. When rehabilitating an existing structure it is not required that the adjacent roadway be raised to meet the roadway overtopping standards for new roads. The replacement structure should be designed such that it does not increase the frequency of roadway overtopping.

	The overtopping discharge is the lowest discharge that overtops the lowest point on the roadway. The overtopping frequency is the recurrence interval of the overtopping discharge. The roadway overtopping frequency is documented in the files and labeled on the plans as the “overtopping frequency”. For overtopping frequencies > 500 years, simply report "> 500 years" on the plans. The files include a note indicating that improving the roadway overtopping frequency would have been outside the scope of the project.		The files include a note indicating that improving the roadway overtopping frequency would have been outside the scope of the project.

	==High Water Marks==		==748.2.2 Overtopping Flood==
			The [[:Category:749 Hydrologic Analysis#749.2.3 Overtopping Flood\|overtopping flood]] is distinguished form the design criteria for roadway overtopping. The overtopping flood is the actual flood at which flow occurs over the roadway. It is used as a design scour event and as the overtopping event reported on plans.

			==748.2.3 High Water Marks==
	The districts shall keep a record of the elevation of high water marks during floods for future design purposes. High water marks should be indicated on roadway structures if possible and labeled with the year of the occurrence.		The districts shall keep a record of the elevation of high water marks during floods for future design purposes. High water marks should be indicated on roadway structures if possible and labeled with the year of the occurrence.

	[[Category:748 Hydraulics and Drainage\|748.02]]		[[Category:748 Hydraulics and Drainage\|748.02]]