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8. Alignment Alternative for Galpin Blvd, So of Hwy 5 1 I CITYOF ,- i' 1 ': > 690 COU LTER DRIVE • P.O. BOX 147 • CHANHASS MINNESO 55317 1 (612) 937 -1900 • FAX (612) 937 -5739 Action by City AdmInisttate & dorsed 1 Uu'A- MEMORANDUM Modified I Rejected TO: Don Ashworth, City Manager Date / a' ' Dste Submitted to Commission I FROM: Charles Folch, Director of Public Works /City Engineer Date Submitted to Cowen) DATE: December 8, 1993 !` i _ 13-'13 I SUBJ: Select Preferred Alignment Alternative for Galpin Boulevard South of Trunk Highway 5; Amend Feasibility Scope - Project No. 93 -26 1 Earlier this fall the City commissioned the consulting firm of Barton- Aschman Associates, Inc. to conduct a feasibility study for the Trunk Highway 5 south frontage road between Galpin Boulevard and Audubon Road and I area trunk utility improvements, Project No. 93 -26. An important road element of this project is the improvement of Galpin Boulevard from Trunk Highway 5 south to Timberwood Drive. During the process of conducting the feasibility study, Barton- Aschman has identified 2 alignment alternatives for this segment of Galpin Boulevard. I Alternative No. 1 basically proposes to load the road widening area on the east side of Galpin Boulevard. Conversely, Alternative No. 2 proposes the widening to be loaded on the west side. A cost estimate /impact summary matrix has been prepared for each of the two alternatives. Alternative No. 1 (widening along the east side) is further differentiated into three options to deal with the roadway side slope, i.e. retaining wall, 2:1 back slope and 1 3:1 back slope. From a purely economic standpoint, Alternative No. 1 implementing a 3:1 roadway back slope is the recommended choice; however, the engineer and staff wanted to present these alternatives and corresponding information to the Council for further discussion and confirmation. I Selecting the preferred alignment alternative is important at this point in time in order to allow preliminary surveying work and the geotechnical investigation to be accomplished in a timely manner and corresponding information I included in the study report. Unless pertinent questions or concerns are raised by Council which may require further investigation, it is staffs recommendation to select Alternative No. 1 as the preferred roadway alignment for Galpin Boulevard from Trunk 1 Highway 5 south to Timberwood Drive as a part of the overall south frontage road Project No. 93 -26. ktm 1 Attachment: Memo from Barton- Aschman dated December 8, 1993. I c: Dave Hempel, Assistant City Engineer James Unruh, Barton- Aschman - Roger Gustafson, Carver County Engineer Thomas & Marian Schmitz, 8190 Galpin Boulevard I Dale F. & Marcia Wanninger, 8170 Galpin Boulevard Mitchell & Mary Krause, 2380 Timberwood Drive James L. & Linda J. Leirdahl, 2350 Timberwood Drive I Lawrence & F. Raser, 8210 Galpin Boulevard 1 1 BARTON - ASCHMAN ASSOCIATES, INC. 111 Third Avenue South, Suite 350 • Minneapolis. Minnesota 55401 USA • (612) 332 -0421 • Fax (612) 332- 6180 1 MEMORANDUM TO: Charles Folch, City of Chanhassen ' COPIES TO: Roger Gustafson, Carver County Harold Eriksen, HGA ' FROM: James Unruh DATE: December 8, 1993 ' SUBJECT: Galpin Boulevard (CSAH 19) Reconstruction Alternatives 1 As discussed at our November 16, 1993, meeting, Barton - Aschman has developed and analyzed various alternatives for the reconstruction of Galpin Boulevard (CSAH 19) between Timberwood Drive and Trunk Highway 5. This memorandum and its attachments briefly describe the alternatives and their comparative costs and impacts. It is anticipated that the Chanhassen City Council will select an alternative at its December 13, 1993, meeting. ' The information presented in this memorandum will also be included in the forthcoming TH 5 South Frontage Road Feasibility Study. 1 Overview Independent School District 112 is proposing to construct a new elementary school on the property east of Galpin Boulevard and south of TH 5 (see Figure 1). A new frontage road is proposed along the south side of the school site. Trunk Highway 5 is scheduled for upgrading to a four -lane divided roadway in the late 1990s. ' Galpin Boulevard will be reconstructed to two lanes in each direction with left -turn lanes along the west side of the school site. From south of the school site to Lyman Boulevard, Galpin Boulevard will be widened to 52 feet; it is likely that pavement striping would 1 limit traffic to one through lane in each direction. Occupation of the elementary school is scheduled for the fall of 1995. The proposed roadway and utility improvements including the south frontage road along the south side of the school site, reconstructed Galpin Boulevard between Timberwood Drive and TH 5, and all utilities must in -place at that time. Alternatives for the reconstruction of Galpin Boulevard between Timberwood Drive and TH 5 have been developed and are illustrated on Figures 1 through 4. Table 1 summarizes the comparative cost estimates and the impacts of the alternatives. Figure 5 shows the existing and proposed profiles of Galpin Boulevard, which are the same for both alternatives. 1 ' 7 RANSP S T RANSPORTATION GROUP A to ,E, 1� BARTON- ASCHMAN ASSOCIATES, INC. I Alternatives I Under Alternative 1 (Figures 1 and 2), Galpin Boulevard would be widened to the east along the school site and to the west along Timberwood Estates. This alternative minimizes impacts to the three existing residences along the west side of Galpin Boulevard and to the mini golf/driving range business northwest of the TH 5 /Galpin I Boulevard intersection. Lowering of the Galpin Boulevard profile (as shown on Figure 5) will require that the front yards of the residences be re- landscaped. The driveways will I also need to be reconstructed. Some impacts occur in the northwest corner of the Timberwood Estates. Section B -B on I Figure 2 shows three grading options for the area. Table 1 summarizes the comparative costs and impacts of the grading options. Under Alternative 2 (Figures 3 and 4), Galpin Boulevard would be widened to the west I along the school site and along Timberwood Estates. However, the alignment would be adjusted at TH 5 to minimize impacts to the mini golf/driving range business north of TH 5. I The three existing residences would be purchased or condemned as roadway right -of -way under this alternative. The middle property is currently for sale. The listed price was 1 $118,900 as of November 18, 1993. An assumed cost of $120,000 for each property was utilized in the comparative cost estimate. 1 Recommended Alternative It is recommended that Alternative 1 be selected because of its substantially lower right - ‚ of-way costs. The 3:1 backslope grading option of Alternative 1 is also recommended. Retaining wall costs are eliminated and a stable groundslope is provided. The two fir trees that would be impacted seem to be in marginal condition. Some scrub growth would have to be cleared. However, the 36 -inch mature oak tree would be preserved. 1 dmv 1 1 1 1 2 1 MN MN NE M i MN MN MN EN MN M EN — M I MI r — N EU TABLE 1 A GALPIN BOULEVARD RECONSTRUCTION ALTERNATIVES D -1 COMPARATIVE COST ESTIMATE/IMPACTS SUMMARY 0 Alternative 1 Alternative 2 D Widen Galpin Boulevard to east along school site Widen Galpin Boulevard to west Widen Galpin Boulevard to west along Timberwood n I Roadway Construction Same for Both Alternatives 3 East Backslope Options Retaining Wall 2:1 Backslope 3:1 Backslope 3:1 Backslope 2 - -Way 3 Residential Properties in Right-of-Way ac = $7,500 0.2 ac = $5,000 0.2 ac = $5,000 @ $120,000 each = $360,000 N (@ $25,000 per acre) 0 n East Side Temporary Easement 0.3 ac = $6,000 0.3 ac = $6,000 0.4 ac = $8,000 0.2 ac = $4,000 p (@ $20,000 per acre) -i m West Side Easements & � Restoration at Residences _ $20,000 $20,000 $20,000 None - Z Retaining Wall Construction 200 ft. @ 8 ft. ht. n @ $40 /s.f. = $64,000 None None None ' TOTALS $97,500 $31,000 $33,000 $364,000 Tree Removals None One 24" Fir Two 24" Firs None 1 ' , ''' 44 -. , : :Iv , v 1 O 0 -An -,,, - ' 7frwomegiojaiv,„-,,, " -----'., - . -- rz - t-1.._,:,„ - '4 .il ,,,,- ,,,-"" , -. , , ' -' A''' V, ' ' - , ' , ■ , ' 1 ' . 7,,k`...• '. : .... 111111.110.W. 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' '.. # R/W TAKING , : ,, ,, - 4 f 4 ' 1 EXISTING R/W , t : :, , , I F i FEASIBILITY ' CITY OF CHANHASSEN FIGURE 1 1 EARTON•ASCHMAN ASSOCIATES, INC. Galpin Boulevard Layout Alternative 1 Eil PARSON• TRANNIPORTATION ORCILIP nu no up 88 EXISTIN W um mil am d no am am q. EXISTING pi R/W DEDICATED VIA SCHOOL 1 GALPIN BLVD SITE AND DEVELOPMENT ` • I PLATTING. SB GALPIN _ NB GALPIN BLVD BLVD 6' 14' 1 12' 12' 12' 14' 8' 2' '-SCHOOL LANE I LANE LTL LANE LANE SDWK SITE 8824 0-0 B824 C -G 47� 2% _ 2_ X � 44 _ - -- ~ --- 4r SECTION A -A _ \ MATCH SCHOOL SITE GRADING 1 TEMP 68' EXISTING R/W TEMPORARY EASEMENT ESMT TIMBERWOOD AS q EXISTING DEVELOPMENT I REQ GALPIN BLVD 23' I PROPOSED R /W� I W/O RETAINING WALL 1 ,, PROPOSED R/W `�r,� t 5. SB GALPIN NB GALPIN 15' - W/ RETAINING WALL I s BLVD I BLVD r_ t ,:r : 1 - 24' 24 ' 38' 6' 14' I 12' 12' 14' 10' I-- 8' 2' FIR FIR OAK LANE LANE LANE LANE i BLVD SDWK : — — — 824 C -0I B624 0 _ — — _ '���1' . 4% I 2% 2% 1—i 2% I __ s POSSIBLE RETAINING SCALE. 1'- 20' WALL SECTION B -B WIDEN GALPIN BLVD TO THE EAST ALONG SCHOOL SITE WIDEN GALPIN BLVD TO THE WEST ALONG TIMBERWOOD 4 t i FEASIBILITY STUDY TH5 South Frontage Road CITY OF CHANHASSEN (from Galpin Boulevard toMcG FIGURE 2 eARTON- ASCHMAN ASSOCIATES, INC. Galpin Boulevard (CSAH 19) Galpin Blvd. Typical Sections ® PARSONS TRANSPORTATION =OUP (from Timberwood Drive to TH 5) Alternative l • YR' •", t'yi • ' i ,. ' tit it , . � ' ;1.. ✓ Y :j '+ j� 41 1 4' � _ • ;3. 4 'bra 4 -- . ' .;* fir " + Ali `{il tip, �" „..... 61.1;: ' , , „ � `,. 0 I '` .. •„"i• . w, ". r -'" �°',R ` „,, a "? Kw u i 1 1. g}E �`e • a, ,y � 'a �, f k'" 5w . 4 r.se . { 1 � ' ( n: � C[ JE� k � � Q �r • e 1 , � . 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I TEMPORARY k :,....t-,,,..,%.,•'•,,:', .!• �; 1 E _: PERMANENT f t'` li R/W TAKING t : w k ' �, 4, ��N 1 EXISTING R /W� I * f,. , 1 I � FEASIBILITY STUDY CITY OF CHANHASSEN FIGURE 3 DAFITON•ASCHMAN ASS OCIATES, INC 1 Galpin Boulevard Layout ® P TRANSPORTATION �,aup Alternative 2 NM r MI NM NM — MN MN - — NM ME — MI — ._ MO _ R/W DEDICATED VIA 66' EXISTING R/W DEVELOPMENT PLATTING . IS EXISTING i GALPIN BLVD I SB GALPIN _ NB GALPIN BLVD BLVD 6' _ 14' 12' 12' 12' ; 14' 8' 2 LANE I LANE LTL LANE LANE SDWK "SCHOOL SITE B624 C-G 8 624 C -G -- 3 8' DITCH —. — - 4�^ 2X 2% 27. �7 _ ` � �+ � �� ` MATCH SCHOOL SECTION C-C SITE GRADING 3 RESIDENTIAL PROPERTIES TAKEN AS R/W TIMBERWOOD DEVELOPMENT 66' EXISTING R/W TEMPORARY I EASEMENT Q EXISTING GALPIN BLVD A SB GALPIN NB GALPIN BLVD BLVD FIR li FIR ,.`� 6' 14' 12' 12' ( 14' 1 10' 8' — 2' _ _ EXIST � � LANE LANE LANE I LANEI BLVD SDWK — — _ _ _ — — — ^ — HOUSE i 20' B624 C -G B624 C -G _ 1 — _ 37 4X� X 2% -: % ✓- - _\ / SECTION D -D SCALE. ,•- 20' WIDEN GALPIN BLVD TO THE WEST Z� 'N g, FEASIBILITY STUDY TH5South FrontageRoad CITY OF CHANHASSEN (from Galpin Boulevard toMeG nrlRoec!) FIGURE 4 ", % ARTON'ASCHAN ASSOCIATES, INC. � iii R M Galpin Boulevard (CSAH19) Galpin Blvd. Typical Sections ® PAWN TRANSPORTATION OROLP (from Timberwood Drive to TH5) Alternative 2 MI ill limo MN IOW 1.11 MIII MIII ill I= MI NM Ili NM 11111 MI ill 11111 Nil • .. .... . ... , . ... . . . . . .. . .. .. ..... . . .. • . . . : . , ... .... . , , . . . . .. . . ... . . . - • . , . . . . • • . . . . . . .. . .. . . . . • • .. .... ... .. ... ... . , . • • • • • . , . . .. • . , .. .. • • . • • • • • • • • • • . • • • • . . . . . . .. . ... . . . ... . .... .. ... . . .. . .. . . • • . • • • • • • • • TPAarNiEct,oN. ... • . . .. PV I I4430 EL. 96876 • : ' : : . i . . . ; . . • • • . : i ii‘h. .Ei itt eti .. . • : . :::::::::: • • • • • • •Pvc • 1 lif 80 EL.: 969:68 • ' • Pt‘id 6. •EL: 46448 • . • : : • . 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' • • ' • • • • • • • — • • • . . plop . .... . . • • • • .6 . , . • • • - • • • • • • • 10.00 Witio • • . • • • • • " • • • • • • • • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .... .. : • .. . . . . . . . . . : . . • ............... • • . ., . . . . . . . .... . . . ..... . . • • • • • • • . .. • • • • • .......... • • • • • • • • • • • . . . . . . . . . . . . . . . . . . . . . • • • • . . . . . . . . . . ........... . . . . , . • • • • i • • ......... • • • • • • • - • . • . • • • • • • • • • " • • . FEASIBILITY STUDY Til 5 South Frontage Road -0 CITY OF CHANHASSEN (from Galpin Boulevard to McGnn Road) F I GURE 5 1111ARTON■A.SCHIRA4%lhl A.r•SOCIATIES INC. Galpin Boulevard Galpin Boulevard (CSAH 19) M PARSONS TRANSPORTATION CROUP (from Tirnberwood Drive to TH 5) Profile CITYOF I add • CHANHASSEN 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937 -1900 • FAX (612) 937 -5739 MEMORANDUM I TO: Mayor and City Council FROM: Don Ashworth, City Manager DATE: December 13, 1993 SUBJ: Set Work Session Date, Optional Plans by Which to Expand City Hall At one of our last work sessions I started to review optional plans by which city hall may be expanded. There simply was not enough time that evening to even start the process. However, that does not change the fact that a critical need currently exists and if we started the planning process today it would be well into 1995 before true expansion could occur. In the meantime, people continue to sit on top of each other, there is absolutely no place to store anything, and efficiency continues to drop recognizing that we do not have a place for new equipment, additional people, etc. I would anticipate that this would be a 1 to 1 hour session. I am also confident that between now and whatever date we do pick out, some other item will appear which would modify the work session to an approximate 2 -3 hour meeting. Do you have a project or program that you would like to see scheduled or reviewed? I would suggest a 5:30 p.m. meeting on either December 20 or 27. I— 0 r Or. References to City Hall Expansion ty p May 23, 1991 Initial presentation of ways to insure property in front of City Hall preserved for City Center Park/City Hall Expansion. July 18, 1991 Staff was directed to prepare the notices for a future hearing on City Center Park/City Hall Expansion plans (8 pages of discussion). September 19, 1991 Review concept alternatives for City Hall Expansion. Place on next agenda to call for public hearing. October 17, 1991 Public hearin g on proposed Central Park/City Hall Expansion. Call P ro P for a public hearing for each meeting during the next two months. November 21, 1991 Continuation of ublic hearing. Costs unveiled of $1.2 to $1.4 P g million without the land acquisition. n of public hearing to hear December 19, 1991 Continuation p g public comments as to p property land acquisition for City Hall Expansion. Conclusion: continue hearing to January 23, 1992, to allow for additional comments. January 23, 1992 Continuation of public hearing. Presentation by EOS Architects 1 regarding City Center Park and design alternatives for future expansion of City Hall (14 pages). Conclusion: City Hall Expansion in 1995. February 20, 1992 Continuation of public hearing. Design alternatives for future expansion of City Hall (15 pages of minutes). Conclusion: Confirm decision of January 23, 1992. Note: From February 1992 to present there have been no less than 20 meetings (10 -15 staff /owners; 5 -10 public meetings) to resolve how the Chanhassen Bank might expand if their land was condemned to expand City Hall. The meetings also involved the Post Office.