MUTCD 11th Edition (2023)
Section 2C.19 — ONE LANE BRIDGE and ONE LANE UNDERPASS Signs (W5-3 and W5-3a)
Manual on Uniform Traffic Control Devices, Section 2C.19. Standards, guidance, options and support statements, with figures and cross-references.
Section 2C.19 ONE LANE BRIDGE and ONE LANE UNDERPASS Signs (W5-3 and W5-3a) Guidance: 01 A ONE LANE BRIDGE (W5-3) sign (see Figure 2C-6 ) should be used on two-way roadways in advance of any bridge or culvert: A. Having a roadway horizontal clearance of less than 16 feet, or B. Having a roadway horizontal clearance of less than 18 feet when commercial vehicles constitute a high proportion of the traffic, or C. Having a roadway horizontal clearance of 18 feet or less where the sight distance on the approach is less than that shown in Condition A of Table 2C-3. 02 Where these conditions exist…
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