County Hwy PB and M Intersection

County Highway (CTH) PB & M Intersection Expansion

General Project Information / Goals:

The intersection of CTH PB & M will be expanded during the construction season of 2022.  The project will include adding left turn lanes on CTH M, upgraded signals and timing at CTH M & PB, a new traffic signal at the east bound off ramp of USH 151 at CTH PB, and other incidental improvements to improvement the intersection.

The goal is to increase safety and traffic flow while providing a protected left turn movement for CTH M movements.

Traffic improvements are more specifically listed below:

  1. Eastbound ramp terminal at the USH 151 – CTH PB interchange.
    1. Addition of north bound CTH PB right turn lane to on-ramp.
    2. Re-construction of off-ramp right turn lane to south bound CTH PB.
    3. Addition of traffic signals.
  2. CTH PB – M intersection
    1. Lengthen south and north bound CTH PB left turn lanes.
    2. Addition of east and west bound CTH M left turn lanes.
    3. Removal of split phase signal operation.
    4. New traffic signals.

Improvements Figure


Milestone Dates (All 2022)
Start construction April
USH 151 Eastbound Off Ramp April - May
CTH M Work  May - June
CTH M / PB Intersection  June - July
CTH PB Work July - August
Project Restoration September

The project schedule is subject to change due to weather or other delays.

  1. Stage 1 (April – May)
    1. US 18/151 eastbound off-ramp to CTH PB will be closed for up to two weeks.
  2. Stage 2 (May – June)
    1. CTH PB northbound down to a single lane.
    2. Right turn to CTH M detoured to American Way.
  3. Stage 3 (June – July)
    1. CTH M west approach of CTH PB to be closed for six (6) weeks.
    2. CTH PB southbound single lane closure from eastbound off-ramp to CTH M.  One lane will be open.
    3. CTH PB northbound outside lane closed between CTH M to eastbound on-ramp.
  4. Stage 4 & 5 (July – August)
    1. CTH PB northbound single lane closure from eastbound on-ramp to CTH M.  One lane will be open.
  5. Stage 5 (July – August)
    1. CTH PB southbound single lane closure from eastbound off-ramp to CTH M.  One lane will be open.

Public Information Meeting:

A Public information meeting is scheduled for April 7, 2022 at 5:30pm. A mailing was sent to adjacent businesses and is linked below for reference.

Letter regarding public information meeting

Public Information, Virtual Meeting Video.  April 7, 2022.

Public Information Meeting, Presentation.  April 7, 2022.

Presentation Document

Traffic Impacts:


Temporary traffic signals will be constructed at the CTH PB – M intersection during construction.  Please anticipate delays during construction.  

Detours will be posted for the closures:

  • Stage 1 – USH 151 eastbound off ramp to CTH PB, note this detour is posted to accommodate truck traffic as a USH shall be detoured to a USH
  • Stage 2 – CTH PB northbound right turn lane to CTH M
    1.  Detoured to American Way
  • Stage 3 – West leg of CTH M
    • Detoured to E. Verona Ave and Old PB

Traffic Closure Map                                                                   Access During Construction Map

Project Contact:

For questions please contact Eric Schulz by phone at 608-845-6695 or by e-mail at