{"id":12179,"date":"2020-06-22T10:10:46","date_gmt":"2020-06-22T15:10:46","guid":{"rendered":"http:\/\/iowahighwayends.net\/blog\/?p=12179"},"modified":"2020-06-21T12:02:54","modified_gmt":"2020-06-21T17:02:54","slug":"mixmaster-ramps-to-get-codes","status":"publish","type":"post","link":"http:\/\/iowahighwayends.net\/blog\/2020\/06\/mixmaster-ramps-to-get-codes\/","title":{"rendered":"Mixmaster ramps to get codes"},"content":{"rendered":"<p>In the June letting is a signage project labeled &#8220;statewide&#8221; but is entirely in Polk County, in two locations: the west and northeast (or east) I-35\/80\/235 mixmasters. The signs that look like mile markers will say &#8220;Ramp&#8221; at the top instead of &#8220;Mile&#8221; and have separate codes for each traffic movement.\u00a0The codes with comment are as follows:<\/p>\n<p><strong>West Mixmaster<\/strong><\/p>\n<ul>\n<li>I-80 eastbound ramp (the two-lane exit): Mile 123, which is only half a mile long in this direction; these markers will have A\/B\/C\/D shaded like tenth-miles.<\/li>\n<li>I-80 westbound ramp (WB-to-NB): Mile 123, with standard tenth-mile markers; 123.0 is at the fork for EB 80 and SB 35, and 124.0 is where EB 80 and SB 35 merge.<\/li>\n<li>I-35 thru lanes: Mile 72, with Mile 73 being about where EB 80 splits off, and 73.1 NB-only just before the I-80 EB ramp joins.<\/li>\n<li>72A\/72B\/72C: Presumably, since these are the exit numbers on I-35 (EB 235, WB 80, University Avenue), they&#8217;re skipped in ramp codes.<\/li>\n<li>NB 35 to EB 235: 72D<\/li>\n<li>WB 235 to NB 35\/80 before 80 joins: 72E<\/li>\n<li>EB 80 to University Avenue (after 235 ramp joins, but before merging into 35): 72F<\/li>\n<li>NB 35 to University Avenue: 72G<\/li>\n<li>EB 80 to SB 35: 72H (but physically almost as far as you can get from G). This should be an I-80 code IMO.<\/li>\n<li>SB 35 to EB 235: 72I<\/li>\n<li>NB 35 to WB 80: 72J<\/li>\n<li>WB 235 to SB 35: 72K<\/li>\n<li>WB 235 to WB 80 (thru lanes): 72L<\/li>\n<li>EB 80 to EB 235 (thru lanes): 72M\n<ul>\n<li>I think L and M should use either 80&#8217;s or 235&#8217;s digits, since this section is where the main east-west lanes switch designations. Since 235&#8217;s 0.0 is where the mainlines cross each other, it would technically be in negative territory! &#8220;Mile negative point 3&#8221; would be too weird. They could have been 122A\/B\/C or 0.0A\/B\/C.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Northeast Mixmaster<\/strong><\/p>\n<p>I-80 mile 137 is now used in <em>all four<\/em> directions even though certain ramps can and IMO should be keyed to I-35 (as Exit 87) and I-235 (as Exit 14). This means, for example, &#8220;Exit 137A&#8221; applies to not only 80&#8217;s exit to SB 235, but also NB 235 to EB 80 and SB 35 to EB 80.\u00a0I-235 is labeled north\/south below for travel direction.<\/p>\n<ul>\n<li>Unlike with I-35, there is no &#8220;Exit 137C&#8221; but the designation is skipped anyway.<\/li>\n<li>NB 235 to EB 80: 137D<\/li>\n<li>NB 235 to WB 35\/80: 137E\n<ul>\n<li>I think these two should be keyed to I-235 instead.<\/li>\n<\/ul>\n<\/li>\n<li>WB 80 to NB 35: 137F<\/li>\n<li>SB 35 to WB 35\/80: 137G\n<ul>\n<li>I would consider this I-35&#8217;s southbound mainline.<\/li>\n<\/ul>\n<\/li>\n<li>SB 35 to EB 80: 137H<\/li>\n<li>WB 80 to SB 235: 137I<\/li>\n<li>EB 80 to NB 35: 137J\n<ul>\n<li>I would consider this I-35&#8217;s northbound mainline.<\/li>\n<\/ul>\n<\/li>\n<li>EB 80 to SB 235: 137K<\/li>\n<\/ul>\n<p>The east mixmaster&#8217;s ramp signs will have a limited lifespan, if the re-engineering of its design begins in 2023 as scheduled.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the June letting is a signage project labeled &#8220;statewide&#8221; but is entirely in Polk County, in two locations: the west and northeast (or east) I-35\/80\/235 mixmasters. The signs that look like mile markers will say &#8220;Ramp&#8221; at the top &hellip; <a href=\"http:\/\/iowahighwayends.net\/blog\/2020\/06\/mixmaster-ramps-to-get-codes\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[8],"tags":[],"class_list":["post-12179","post","type-post","status-publish","format-standard","hentry","category-construction"],"_links":{"self":[{"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/posts\/12179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/comments?post=12179"}],"version-history":[{"count":3,"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/posts\/12179\/revisions"}],"predecessor-version":[{"id":12182,"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/posts\/12179\/revisions\/12182"}],"wp:attachment":[{"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/media?parent=12179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/categories?post=12179"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/iowahighwayends.net\/blog\/wp-json\/wp\/v2\/tags?post=12179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}