for Highway Construction Page 507 of 71 5 SECTION 618 – MARKER POSTS, WITNESS POSTS, AND STREET MONUMENTS
618.01 Description.
Provide and place posts for right of way, reference and project markers, witness posts, and street monuments .
618.02 Materials.
Provide concrete for the posts and street monuments as specified in 509. Use white portland cement for project markers. After the project markers have dried thoroughly, add the lett ers using 2 coats of an approved black paint . Allow the first coat to dry thoroughly before applying the second coat. If light weight aggregates are used, provide aggregates in accordance with ASTM C330. Provide brass caps as specified in 708.28. Provide steel witness posts as specified in 708.16, except the holes may be omitted. Provide cast iron casings that meet the requirements of AASHTO M 306. An approved equal for the cover and casting is acceptable. Provide wood w itness posts of cedar or fir that are well seasoned, straight, and sound. Treat the posts as specified in 710. Paint wood witness posts white with 1 coat of Formula No. 6 and 2 coats of Formula No. 11 as specified in 627.03. Provide fiberglass witness posts that are single piece markers capable of simple, permanent installation by 1 person using a manual driving tool, and resist displacement from wind and vehicle impact forces when properly installed. Provide posts that are a constant “T” cross -section design that provides a flat surface for sheeting application, and a reinforcing rib incorporated longitudinally along the back midsection to provide structural rigidity. Put a p oint on the bottom end of the markers for easier ground penetration. Provide fiberglass witness posts complying with the properties in Table 618.02- 1. Table 618.02 -1 – Fiberglass Post Criteria Property ASTM Test Method Minimum Value Ultimate Tensile Strength D638 20,000 psi Specific Gravity D792 1.7 Weight Percent Glass Reinforcement (Ignition Loss) D2584 50 percent Barcol Hardness D2583 47 Fabricate fiberglass witness posts of a durable, UV light resistant, continuous glass fiber and marble reinforced, and thermosetting composite material that is resistant to impact, ozone, and hydrocarbons within a service temperature range of - 40°F to 140°F. Color the posts uniformly throughout the entire cross -section. Incorporate ultraviolet resistant material to inhibit fading or cracking of the markers on field exposure. Ensure the markers exhibit negligible color fading after 2,000 hours in accordance with ASTM G26. for Highway Construction Page 508 of 71 5 618.03 Construction Requirements. Set right of way markers, reference markers, witness posts, and street monuments as specified. Make markings and file recordings under the supervision of an Idaho licensed PLS when required by 55- 19 Idaho Code, 55- 16 Idaho Code, or IDAPA 10.01.03. Separate payment will not be made for endorsements or filing fees when work is specified for contract surveying. Mark right of way and centerline monuments with station and offset. Excavate hole of sufficient size t o allow for adjustment of the marker post to the lines required. Align the posts as direct ed and backfill the hole with suitable material. Carefully tamp in place. Give the upper 3 feet of the posts for project markers and the upper 12 inches of the posts for right of way markers a rubbed surface finish as specified in 502.03.I. Cure for a minimum period of 14 days before use. Place the brass cap in a casing with cover in heavy traffic areas.
618.04 Method of Measurement.
The Engineer will measure acceptably completed work per each.
618.05 Basis of Payment .
The Department will pay for acceptable quantities as follows: Pay Item Pay Unit Project Markers ...................................................................................... Each Right of Way Markers ............................................................................. Each Reference Markers ................................................................................. Each Witness Posts ......................................................................................... Each Street Monuments .................................................................................. Each Payment for marker posts and street monuments required under 107.19 are not included in the quantities of work under this section for Highway Construction Page 509 of 715 SECTION 619 – ILLUMINATION
619.01 Descript ion.
Provide and install illumination of one of the following types:
1.Type 1. Multiple circuit, LED sign lighting.
2.Type 2. Multiple circuit, LED street lighting. Installations may include electrical conduit , wiring, luminaires, poles , pole foundations, and electrical equipment necessary for the construction of a complete lighting system.
619.02 Materials.
Provide materials that bear t he seal of approval of the Underwriters Laboratories, Inc. ( UL), National Electrical Manufacturers Association (NEMA), or other approved testing organizations. Materials must also meet the NEC and local codes and requirements of the connect ing utility. Provide materials as specified in: Concrete ....................................................................................................................................... 502 Nonstructural Concrete ................................................................................................................. 509 Illumination Poles and Bases ................................................................................................... 708.19 Service Poles for Illumination .................................................................................................. 710.06 Pole Keys ................................................................................................................................ 710.07 LED Luminaries ....................................................................................................................... 713.01 Rigid Steel Conduit .................................................................................................................. 713.03 Plastic Conduit ......................................................................................................................... 713.04 Concrete Junction Box es ......................................................................................................... 713.05 Composite Junction Boxes ...................................................................................................... 713.06 Electrical Conductors ............................................................................................................... 713.07 Illumination pole foundations require structural concrete as specified in 502. Electrical service pedestal foundations requi re nonstructural concrete as specified in 509. Submit a list of proposed equipment and materials for approval. For each item listed, include manufacturer’s name, size, and catalog number. Submit nonstandard pole design for approval before use.
619.03 Construction Requirements.
Provide work that meets the NEC and local codes and requirements of the connecting util ity. Where soil conditions allow, excavate for pole foundations to the neat lines of the foundation , and place the concrete directly against the sides of the excavation. Where soi l conditions prohibit this, form the foundations and place the concrete as specified in 502.
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 543–544 of 768.