2005-04-27 CC Packet - Laserfiche WebLink

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1-35E at Anoka CSAH 14 - Interchange Alternatives Sketches have been prepared for several alternative designs for this location. In addition, several other alternatives were also considered for a planning level analysis. Each of these alternatives was analyzed for the year 2030 on a critical lane basis for each ramp intersection for both the am and pm peak hours. The alternatives include: I. Diamond interchange with 2 through lanes in each direction and double left turns to the entrance ramps. Figure 1. 2. The diamond interchange plus a loop to handle the westbound to southbound left turn. SW frontage road connects to west ramp terminal. Figure 2. 3. The diamond with loop from concept 2, but with the southwest ramp replaced by a left turn to the entrance ramp. Figure 3.. 4. A partial cloverleaf "A" where the loops are "ahead" of the bridge on the main roadway. At this location those loops would be the northwest and southeast quadrants. A C-D roadway is provided for westbound CSAH 14 traffic to reduce conflicts at the east ramp intersection allow traffic entering southbound 1-35E to bypass the east ramp signal. SW frontage road connects to west ramp terminal. Figure 4. 5. A partial cloverleaf "B" where the loops are beyond the bridge on the main roadway. At this location those loops would be in the southwest and northeast quadrants. Figure 5. 6. A single point urban interchange (SPUI). Access to southwest frontage road would be via right turn access to CSAH 14 and a local street underpass. Figure 6. 7. A "super" diamond which features auxiliary lanes, double left turn lanes and three through lanes across the bridge. Access to southwest frontage road would be via right turn access to CSAH 14 and a local street underpass. Figure 7. 8. A "folded AfB" with all four outer ramps and two loops. In this case the loops are both on the south side of CSAH 14. Figure 8. 9. A "folded B/ A" with all four outer ramps and two loops. In this case the loops are both on the north side ofCSAH 14. SW frontage road connects to west ramp terminal. Figure 9. 10. A "folded B/ A" with all four outer ramps and two loops. In this case the loops are both on the north side of CSAH 14. However, with this concept the NE loop becomes an inverted loop with a bridge over 1-35E. SW frontage road connects to west ramp terminal. Figure 10.