LARIMER COUNTY RURAL AREA ROAD STANDARDS

Chapter 4 – Road Design and Technical CriteriaSection 4.10 Road Name Signs and Traffic Control DevicesFor curb returns on a State Highway, CDOT’s curb radii requirements shallsupersede these Standards.4.9.1.8.C Curb Return GradesThe minimum desirable grade around corners at intersections is 1 percent. Theminimum allowable grade around corners at intersections shall be 0.5 percent.4.10 ROAD NAME SIGNS AND TRAFFIC CONTROL DEVICES4.10.1 GeneralThis section describes general signing design requirements for use in unincorporatedLarimer County. All design and construction of signing shall be in conformance with thissection and the current requirements of the Manual on Uniform Traffic Control Devices(MUTCD). If there are discrepancies between these standards and the MUTCD, theMUTCD will take precedence. For the purposes of this section, ‘roads’ and ‘streets’mean the same thing.4.10.2 Traffic Signing4.10.2.1 Type and Location of SignsThe Engineer shall make the final determination regarding the type and location ofsignage controls within the right-of-way or access easement. These controls shallinclude traffic control signs, road name signs, delineators, and permanentbarricades.4.10.2.2 New RoadwayPermanent signage, unless otherwise approved by the Engineer, shall be completelyin place before any new road or access easement is opened for use.4.10.2.3 Sign Posts, Supports, and MountingsSign posts and their foundations and sign mountings shall be constructed to holdsigns in a proper and permanent position, to resist swaying in the wind ordisplacement by vandalism.a. Sign Post. The post shall be constructed in two sections:1) Anchor Sleeve. A 2-inch 12-gauge galvanized steel square stub sectionwith holes, three (3) feet long, is driven into the ground 30 to 33 incheswith 3 to 6 inches remaining above the final grade. The sign postsystem’s material specification is Telspar 22F12A 03PG, or approvedequal, 2-inch x 3 feet anchor post with holes.2) Post Section. A 1 ¾ -inch square galvanized steel post section withholes is inserted into the stub and bolted. The material specification isTelspar 20F12P-10PG, or approved equal, 1 ¾ -inch square 12-gauge10-foot post with holes. Posts shall be installed 6 to 8 inches into theanchor (stub), which has 3 to 6 inches sticking out above the final grade.b. Post Bolts. Two 2-1/2-inch long, 3/8-inch hex head bolts are used to attachsign posts to sign anchor (stubs). These bolts shall be separated by onepredrilled hole space and installed 90 degrees to one another.Larimer County Rural Area Road Standards Page 4-11October 22, 2007