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Figure 9: CSAH 5 and CSAH 56 (Ramsey Boulevard) Realignment Improvement Concept <br />4 DEG. (14 . 3945 R DESIRABLE MAX <br />55 MP <br />' R DESIRABLE t . . ) <br />,E0 MPH41 <br />1 <br />14 <br />rn. "1-1i <br />a6 MPH(e_O.OS ) .� <br />,IfOR 50 MPM (e=70. 05 5 ) <br />1,111 <br />_ z <br />This intersection improvement includes: <br />• Realignment of CSAH 56 (Ramsey Boulevard) to be more perpendicular to CSAH 5 <br />• Converted northbound CSAH 5 bypass lane configuration to dedicated left turn and through <br />lane <br />• Increased centerline radius of CSAH 5 to 1,200 feet from 870 feet. This brings the curve closer <br />to the existing speed limit of 55 mph. <br />The estimated construction cost for the realignment improvement concept at CSAH 5/CSAH 56 <br />(Ramsey Boulevard) is $2,300,000 - $3,100,000. <br />Various realignment alternatives were considered to balance safety improvements and property <br />impacts. As shown in Figure 9 the larger the radii, the longer the length of improvements needed as <br />well as more property impacts to the east. While larger radii allow vehicles to navigate a curve at a <br />more consistent rate of speed for the corridor, a design speed can vary based on the superelevation <br />cross slope corresponding to a specific centerline radii. A comparison of various realignment <br />alternatives for this intersection is shown in Table 9. <br />21 <br />