Warning signs
Narrow Bridge sign
The bridge ahead is narrower than the road you are on, though two lanes still fit.
- Diamond
- Yellow
- MUTCD W5-2
How to recognize it
Shape and background first
ShapeDiamonda diamond stood on its point
BackgroundYellowyellow, the warning color
FamilyWarning signsFederal designation W5-2 in the MUTCD.
Federal designation W5-2 in the MUTCD, the national standard every state signs to.
What the MUTCD specifies
Designation: W5-2
MUTCD Section 2C.18
Conventional road size: 36 x 36 in
Source: Federal Highway Administration, MUTCD 11th Edition (December 2023), Part 2, Table 2C-1, verified 2026-09-26.
On the test
What the test wants you to know
The mistake people make
A narrow bridge still carries both directions. A one lane bridge sign is different and means only one vehicle can cross at a time, so the first to arrive goes first.
Same family
