Guardrail Post and Blocks Specifications.pdf
This document is a standard plan from the Michigan Department of Transportation (MDOT) for various types of guardrails (Types A, B, BD, T, TD, MGS-8, and MGS-8D), dated 01/29/2024. The 16-page technical drawing provides comprehensive detailed specifications for guardrail installation, including elevation views, post spacing, beam element lengths, transition details, wood and steel post configurations, offset block designs, splice details, and guardrail reflector placement guidelines. The standard plan covers multiple guardrail types with specific dimensions for wood and steel posts, including variations for different traffic conditions, shoulder widths, and embankment slopes.
The technical drawings include precise measurements for post spacing (typically 6'-3"), beam element lengths (12'-6" effective), ground line heights, and installation requirements for different guardrail configurations. The plan provides detailed instructions for connecting different guardrail types, including transition details between standard W-beam elements and MGS (Midwest Guardrail System) elements. Additional specifications cover reflector placement, with guidelines for one-way and two-way traffic scenarios, specifying reflector intervals of 50'-0" on tangent sections and curves with a radius of 1150' or more, and 25'-0" on curves with a radius less than 1150'. The document is approved by the MDOT Director and has received FHWA approval, indicating it meets federal highway standards.
3MB PDF 9/11/25 7267.pdf
This is an Invitation for Bid (IFB) issued by the Road Commission for Oakland County (RCOC) for Guardrail Posts and Blocks (IFB No. 7267). The solicitation covers annual estimated quantities for guardrail infrastructure materials to be used primarily by the Traffic Safety Department, with a contract term from November 1, 2025 through October 31, 2026. The bid is scheduled to be published on BidNet on September 11, 2025, with responses due on Tuesday, September 30, 2025, at 2:30 p.m. Eastern Time. Bidders are required to submit firm-fixed pricing for materials that must be manufactured by the original equipment manufacturer (OEM) or an approved equal, with all goods to be tailgate delivered to the RCOC Warehouse in Waterford, Michigan.
The contract will be awarded to the lowest responsive and responsible bidder meeting all specifications, with RCOC reserving the right to award to multiple suppliers. Bidders must provide comprehensive insurance coverage, including general liability, auto liability, and workers' compensation, with minimum liability limits of $1,000,000 per occurrence. Payment terms are net thirty (30) days after acceptance, and the successful bidder must provide a W-9 within ten calendar days of award. The contract is subject to annual budget appropriations, and RCOC is tax-exempt. Bidders are required to submit detailed information about their ordering process, customer service contacts, delivery capabilities, and any potential deviations from the specified requirements.
116KB PDF 9/11/25