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2021-094 Electric Line Undergrounding StrategyNovember 5, 2021 Report No. 2021-094 INFORMAL STAFF REPORT TO MAYOR AND CITY COUNCIL SUBJECT: Electric Line Undergrounding Strategy EXECUTIVE SUMMARY: Identify major corridors that can be cleaned up by undergrounding electric infrastructure and include estimated costs. DME initially identified 31 potential roadway corridors in Denton that could be evaluated for potential overhead to underground electric facility conversion. DME selected five high-profile locations for more detailed review and cost estimations. The total estimated cost to convert the five areas identified for potential conversion is $38.74M. DISCUSSION: To determine which corridors in Denton might be preferred candidates for the conversion of overhead distribution facilities to underground, DME Engineering requested from COD Engineering input as to which roadways they consider entrances to the city. COD Engineering responded with thirty-one (31) roadways that fall under the category. DME Engineering retrieved traffic volume data from the North Central Texas Council of Governments as well as the Texas Department of Transportation and identified, for each roadway, its traffic volume. Two roadways, IH35 and FM2499 did not have traffic volume study numbers available for the test period (2019) and were not considered for this analysis. The roadways were then sorted from the highest to least traffic volume. After the initial sort, two additional subjective criteria were applied. The first was to accept the roadway as entrance into the City (Y/N); then if the segment was a “banner” entrance (Y/N). To qualify as a “banner” entrance the roadway must truly introduce the traveler to either the City’s downtown core or be a path to shopping and restaurant venues. A few of the roadways identified in the initial evaluation sort did not have distribution circuits along them or the length of existing distribution was relatively short; therefore, these roadways were passed over and others added for consideration due to their impact to aesthetics. Providing a detailed review and cost estimation to convert overhead facilities to underground for all 31 corridors was deemed too large of a task to handle with available resources in a timely manner. Therefore, DME Engineering focused on five major corridors which met the criteria mentioned above, and presented in Table 1, that would have the most significant aesthetic impact. # Roadway From To Estimated Cost 1 US 77 (Dallas Dr) I-35E Johnson St $7.80M 2 Loop 288 University Audra $9.87M 3 E McKinney St Loop 288 Railroad Ave $9.77M 4 US 380 Bonnie Brae St Carroll Blvd $3.95M 5 US 77 Loop 288 Bolivar St $7.34M November 5, 2021 Report No. 2021-094 # Roadway From To Estimated Cost Total $38.74M Table 1 DME Engineering evaluated the existing overhead distribution facilities along each of these five corridors – see attachments 1 through 5 – and estimated the cost based on total line footage as using recent history of actual costs for similar projects. If DME is directed to move forward with these projects, detailed Engineering designs would be initiated to identify actual below-grade site conditions and availability of land rights necessary for each segment to further refine the estimates for each project. Given the scope of work for each project and current workload levels for DME Engineering, it is likely engineering consultant(s) for design, easement acquisition, and project management services would need to be engaged with an approximate timeline of ten years to complete. Consultant costs are not included in the estimates. There is a significant amount of non DME-owned overhead communication (telephone and cable) lines that would need to be converted to underground to fully attain the cleaner corridor look. The estimates above do not include any estimated costs for converting these existing overhead communication lines to underground. These estimates do not include any cost escalation factors, which would be applicable to multi- year projects. CONCLUSION: DME staff is providing this information in response to Council priorities identified in 2021. If Council is interested in pursuing any or all these projects, staff would recommend that a 2-minute pitch be requested so that the full Council can weigh in on this topic. ATTACHMENTS: 1. Roadway 1 - Dallas Drive area 2. Roadway 2 - Loop 288 Area 3. Roadway 3 - McKinney Street area 4. Roadway 4 - US Hwy 380 area 5. Roadway 5 - US77/Elm St area STAFF CONTACT: Jerry Fielder – DME Engineering Division Manager REQUESTOR: Jesse Davis – City Council District 3 PARTICIPATING DEPARTMENTS: DME Engineering November 5, 2021 Report No. 2021-094 STAFF TIME TO COMPLETE REPORT: Approximately 130 hours of DME Engineering staff time was expended to compile this report. ALEGRE VISTA CENTRE PLACECENTRE PLACE TEASLEY PRIVATE PRIVATE MILLMILLINDUSTRIALJOHNSON CHAMBERS KERLEY HILL PRIVATE SANTA FE SANTA FE KENWOOD PIPING ROCK I-35E SERVICE RD RUIDOSA LAREDO PRIVATE DAUGHERTYPRIVATEPRIVATEPRIVATE RIO GRANDE PRIVATE RAMEY SCOTT LINCOLNSMITH KERLEY MORSE HILL SIMMONSINMANPRIVATEPRIVATEPRIVATEPRIVATEPRIVATEPRIVATEPRIVATEPRIVATEPRIVATEPRIVATEPRIVATESAM BASS SAN GABRIEL DUNCAN S I-35E Ramp I-35E PRIVATE PRIVATEPRIVATE PRIVATE PRIVATE PRIVATE PRIVATE OLMOS CREEK I-35E SERVICE RD I-35E SERVICE RD I-35E ANGELINA BEND GUADALUPE RIO GRANDE PRIVATE SAN GABRIEL TRAVIS PRIVATE PRIVATE PRIVATEPRIVATE PHOENIX KENWOOD TRAVIS HOPKINS PRIVATE TEASLEY TEASLEY SANTA FE PUBLIC ALLEY JOHNSON SHADY OAKS DALLAS DUNCAN SMITH MINOR JOHNSON SMITH DALLAS REED CLIFTONCHAMBERSCHAMBERS HILL SCOTT KERLEY CLIFTON HILL SCOTT MCDONALD LINCOLN HILL BOARDWALK DUNCAN COOKSIMMONS PARK SIMMONS JOHNSON MORSE EAGLE MORSE CROSS TIMBER INDUSTRIAL COOKMILLWYE ROBERTSON ALEGRE VISTA PRIVATE MILL MORSE DALLAS SOMBRE VISTA PRIVATE PUBLIC ALLEY MORSE HILL RUTH RUTH MILLS I-35E Ramp I-35E SERVICE RD I-35EI-35E SERVICE RD S I-35E Ramp I-35E SERVICE RD I-35E SERVICE RD PRIVATE COLLINSI-35E I-35E SERVICE RD I-35E PRIVATE PRIVATE PRIVATE S I-35E Ramp I-35E SERVICE RD I-35E I-35E SERVICE RD I-35E SERVICE RD I-35E SERVICE RD I-35E I-35E SERVICE RD S I-35E Ramp I-35E SERVICE RD PRIVATE S I-35E Ramp I-35E I-35E I-35E SERVICE RD I-35E SERVICE RD S I-35E Ramp I-35E SERVICE RD I-35E SERVICE RD I-35E SERVICE RD I-35E SERVICE RD I-35EI-35E I-35E SERVICE RDI-35E SERVICE RD I-35ES I-35E RampI-35E SERVICE RD DALLAS DALLAS SAN GABRIEL DALLAS PRIVATE DALLAS DALLASDALLAS DALLAS BELLINMAN TEASLEY TEASLEY TEASLEY TEASLEY HOPKINS PIPING ROCK DALLASTEASLEY TEASLEY DALLAS DALLAS DALLAS DALLAS RIO GRANDERIO GRANDE DALLAS DALLAS DALLAS PRIVATEPRIVATE PRIVATEPRIVATE JACKSON S I-35E Ramp TEASLEY TEASLEY TEASLEY TEASLEY I-35E S I-35E RampS I-35E Ramp I-35E SERVICE RD W W W W WWWW WW W WW W W W W W W W W W WWW W W W WW W W WW W W W W W WW W W W W W W W W WW W W W W W W W W W WW WW W WW W W W WW W WW WW W W RailroadBridgeJohnsonLC224LC214LC222DBL CKTDallas DrLC232WR213WR221DBL CKTTeasleyWR221LC232LC232Dallas Dr I-35ESmithTransmissionLine Crossing LC214, LC222, LC224, LC232, WR213, WR221 OverheadDenton Corridor OH to UG Conversions: Dallas Dr from I-35E to JohnsonLEGEND- Approximately 4750' of overhead primary line (LC222, LC232and WR221) on the North side of Dallas Dr.- Approximately 4350' of overhead primary line (LC224, LC232,and WR221) on the South side of Dallas Dr.- 73 primary distribution poles and equipment on both the northand south side of Dallas Dr.- At least 8 primary overhead line crossings.- Approximately 4700' of joint communications are attached tothe North side poles along Dallas Dr.-Approximately 2050' of foreign overhead communication linesand poles on the North and South sides of Dallas Dr.- Approximately 28 OH services would be affected by thisconversion.Foreign OverheadNFeet05001000Joint CommsROADWAY 1 - DALLAS DR AREA CARDINALCARDINALMCKINNEYHUMMINGBIRDLOOP 288 LOOP 288 LOOP 288LOOP 288 RUSSELL NEWMANMARKET LOOP 288MCKINNEYAUDRACARDINALCARDINALCARDINALCARDINALLOOP 288 ORIOLE LOOP 288 LOOP 288 HOLLAND LOOP 288LOOP 288 LOOP 288LOOP 288 LOOP 288 LOOP 288LOOP 288Loop288WWWWWWWWWWOWWWCCCCCWWWWWWWWWOWWWWWWWWWOCCOCOCCCCCWWWWWWWOWWWOWOWWWWWWOWWOOWWWWWWWWWWWCCWWWOCCCCC Loop288AudraMcKinney AR212CC211CC211CC221DBLCKTAR212TransmissionLine Cross ing AR212, CC211, CC221 OverheadDenton Corridor OH to UG Conversions: Loop 288 from University to AudraLEGEND- Approximately 5500' of overhead primary line (AR212, CC211, and CC221) on the West andEast sides of Loop 288.- Approximately 77 Primary conductor poles with lighting and distribution equipment.- There are several topped poles used for communications on both sides of Loop 288.- There are no overhead, primary crossings (but some secondary and comms crossings) andminimal underground segments along this stretch of the highway.- The full length of the DME overhead lines on the west side of Loop 288 are shared withforeign communications. - There are approximately 750' of joint comms attached to the overhead poles on the East sideof Loop 288.- About 15 - 20 services, both OH and UG, would be affected.NJoint CommsFeet05001000ROADWAY 2 - LOOP 288 AREA CARDINALCARDINAL CARDINAL CARDINAL MCKINNEY PRIVATE PRIVATEPRIVATE CAMPBELL SUMMERWIND BELLAIRE MOCKINGBIRD TROY H. LAGRONETROY H. LAGRONE PRIVATE PRIVATE SPRINGTREE PECAN GROVE PRIVATE BELLAIRE ASPENHILL MCKINNEY BOB-O-LINK MACK PRIVATE LANE MCKINNEY MCKINNEY MCKINNEY PRIVATE PRIVATE PRIVATEPRIVATE PRIVATE PRIVATE PRIVATE MOCKINGBIRD BLUEBIRD PRIVATEPRIVATE SPRINGTREE PRIVATE PRIVATE JOSHUA PECAN GROVE PRIVATE JANNIEMCKINNEY MOCKINGBIRD HUMMINGBIRD MACK PRIVATE JOSHUA MONTCLAIR MONTCLAIR MCKINNEY AUDRA MCKINNEY MCKINNEY PRIVATEPRIVATE PRIVATEPRIVATEPRIVATEPRIVATEPRIVATE PRIVATE PRIVATE PRIVATE PRIVATE MCKINNEY MCKINNEY PRIVATE VINE WOODROW Loop288W WWW W WWW WW W W W W W WWW W W W W WWWWW W W W W W WW W W W W W W W W W W WW W W W WWWWWWWWWW MK212MK231MK232McKinneySubstation WoodrowAudraMockingb ird McKinney Match lineMatch lineW WW O CCMcKinney TransmissionLine Crossing AUDRA MCKINNEY CAMPBELL OAK BANNERRAILROAD SUMMERWIND BELLMCKINNEY WOOD PRIVATE PRIVATE PRIVATE BRADSHAW RUDDELL CHARLES DAVIS ROSEULAND FOX CREEK CAMPBELL MACK JANNIE DAVIS MCKINNEY MCKINNEY FRAMEHICKORYMCKINNEY MCKINNEY FRAME MACK MCKINNEY PRIVATE PRIVATE EXPOSITION PRIVATE PRIVATE PRIVATE CRAWFORD HICKORY PRIVATE PRIVATE PRIVATE PRIVATE HICKORY BRADSHAW WOOD HICKORY HICKORY CRAWFORD HICKORY EXPOSITIONHICKORY CRAWFORD WOOD OAK OAK PRIVATE PRIVATE PRIVATE OAK FRAME BRADSHAW CRAWFORD RUDDELL HETTIE MCKINNEY JANNIE MCKINNEY MCKINNEY MACK PRIVATE BELLMCKINNEYFRAME PRIVATE LONGMEADOW WOODFORD KENT DAVIS EAGLE NEST BRADSHAW DAVIS RAILROADULAND LONGMEADOW RAILROAD MCKINNEY AUDRA LONGMEADOW RUDDELL DAVIS PRIVATE PRIVATE PRIVATEPRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE PRIVATE MCKINNEY WOOD WOODROW RailroadTracks WW WWWWWWWWWWWWWWW WW W WW W W W WW W WW W WW W W WW W W W MK232MK232McKinneySubstationWoodrowAudraBradshawMcKinneyMatch lineMatch lineMK212, MK231, MK232 OverheadDenton Corridor OH to UG Conversions: McKinney from RR tracks to Loop 288LEGEND- Approximately 6400' of overhead primary lines (MK231 and MK232) on the North side of McKinney.- Approximately 2550' of overhead primary lines (MK212 and MK232) on the South side of McKinney.- Approximately 3150' of underground primary lines (MK212 and MK232) on the North side of McKinney.- Approximately 3150' of overhead secondary lines (MK212 and MK232) on the North side of McKinney.- Approximately 6100' of foreign overhead communication lines and poles on the South side of McKinney.- Over 85 distribution poles and equipment with primary conductor and 10+ poles with secondary conductor are installed between the North and South sides of McKinney.- Virtually all of the DME overhead lines share poles with communications including the North side secondary conductor poles (shown in light blue).- Approximately 60 OH services would be affected by the change.MK212, MK232 UndergroundForeign OverheadNNFeet05001000Feet05001000Joint CommsMK212, MK232 Secondary OverheadROADWAY 3 - MCKINNEY STREET AREA BRYN MAWRUNIVERSITY WESTWAY ANNA HINKLE CARROLL UNIVERSITY UNIVERSITY ALICE UNIVERSITY CARROLL SUNSET ELM HINKLE UNIVERSITY UNIVERSITY UNIVERSITY UNIVERSITY ANNA BOLIVAR BOLIVAR UNIVERSITY UNIVERSITYUNIVERSITY UNIVERSITY UNIVERSITY UNIVERSITY UNIVERSITY UNIVERSITY UNIVERSITY ALICE WESTWAY CARROLL CARROLL WESTWAY BOLIVAR WESTWAY CORNELL SUNSET CARROLL SUNSET SUNSET CARROLL DARTMOUTHAMHERSTCORNELLAMHERSTAMHERSTAMHERST CARROLL DENISON ELM SUNSET FULTON WESTWAY WESTWAY WESTWAY UNIVERSITY COIT UNIVERSITY CARROLL W W WW W W WW WW W W WW WW WWWWW W W WWHWY 380HWY 380Carroll BlvdHinkleMaloneNL211BB211UNIVERSITY UNIVERSITY EMERY EMERY UNIVERSITY EMERY UNIVERSITY UNIVERSITY EMERY EMERY EMERY MALONE UNIVERSITY CORNELL UNIVERSITY AMHERST AMHERST AMHERST AMHERST AMHERST MALONE MALONE GEORGETOWN PRIMROSE ECTOR EMERY GAY UNIVERSITY UNIVERSITY UNIVERSITY EMERY BONNIE BRAE WW W W W W W W W WW WWW W WW W WWW W WWWWW HWY 380MaloneEctorBonnie BraeBB211BB211BB213TransmissionLine CrossingBB211, NL211 OverheadBB211, BB221, NL211 UndergroundDenton Corridor OH to UG Conversions: HWY 380 from I-35 to CarrollLEGEND- Approximately 3400' of overhead primary line (BB211 and NL211) on the North side of HWY 380.- 32 Primary conductor poles with lighting and distribution equipment.- Approximately 1700' of overhead secondary line (BB211 and BB213) on the South side of HWY 380.- 18 Secondary conductor poles with lighting and communication equipment.- Approximately 2600' of foreign overhead communication lines and poles on the South side of HWY 380.- Appriximately 750' of foreign overhead communication lines and poles on the North side of HWY 380.- Approximately 3450' feet of joint communications are installed on DME overhead poles on both sides of HWY 380.- Approximately 10 services, OH and UG would be affected by this conversion.BB211, BB213 Secondary OverheadForeign OverheadNNFeet0250500Feet0250500Foreign OverheadROADWAY 4 - US HWY 380 AREA DORISDORIS MORIN BEATRIZ DONNA JOYCE CARROLL BROOKE BROOKE GARDENVIEW GABE FALLMEADOW SKELTONSKELTON HERCULES MORIN NORTHPOINTE BROOKE GARDENVIEW GARDENVIEW DONNA JOYCE BENJIMAN EVERS McKAMY SANTOS GARDENVIEW HERCULES HERCULES HERMALINDA ELM RINEY EVERS ELM ELM ELM PRIVATE PRIVATE LOOP 288 PRIVATE PRIVATE HERCULES HARDAWAY RINEY PRIVATE LOOP 288 PRIVATE PRIVATEPRIVATE MORIN ASHCROFT CHAPEL HILL LINDA BONNIE BRAE WINDSOR CASIEBETH EUFEMIA HINKLE MESQUITE ELM RINEY WINDSOR WINDSOR CASIE MEADOW VIEW JOYCE BROOKE EVERS FALLMEADOW CASIE FALLMEADOW GARDENVIEW EVERS GARDENVIEW FALLMEADOWFALLMEADOW ELM NICOSIA ROBBIE-O COBBLESTONE FALLMEADOW HERMALINDA SANTOS SANTOS BEATRIZ SANTOS TRIPP TRAIL CHON BEATRIZ CONSTANTINA NICOSIA CRISOFORO MORIN CARRIGAN CARRIGAN EUFEMIA EVAN COTTON MEADOWEDGE BEATRIZ MEADOWEDGE MEADOWEDGE NICOSIA MORIN HERCULES BEATRIZ ALLISON HERCULES HERMALINDA LOGAN NICOSIA NICOSIA BEALL BEALL BEALL BEALL LOCUSTLOCUSTLOCUSTLOCUSTLOCUSTLOCUST JOYCE FALLMEADOW NICOSIA RINEY DEL DEL ELM WINDSOR ELM COBBLESTONE McKAMY ELM ELM WINDSOR ELM WINDSOR ELM ELM ELM BROOKE BONNIE BRAE BROOKEBROOKE PUBLIC ALLEY RINEY PUBLIC ALLEY BROOKE COBBLESTONE EVERS PUBLIC ALLEY FALLMEADOW PRIVATE PRIVATE HERMALINDA PRIVATE PRIVATE HERMALINDA FALLMEADOW NORTHPOINTE FALLMEADOW HERMALINDA HERCULES HERCULES PRIVATE PRIVATE PRIVATE ELMELM LOOP 288LOOP 288 PRIVATEPRIVATE PRIVATE PRIVATE PRIVATE LOCUSTLOCUSTLOCUST ELM ELMELM ELM BONNIE BRAE BONNIE BRAE LOOP 288LOOP 288 PRIVATE PRIVATE ANN ARBOR MEADOWTRAIL SOLANASOLANASOLANA SOLANA GREYSTONE BECKER BRENTWOOD DAVENPORT CRICKET CANONGATE HARDAWAY SAMUEL EVERS WILSON ROBBIE RUN JACKSON HOLLOW CODY BEALL CRIMSON CALVARY TRINITY CROWN ABRAM HERCULES RINEY (FUTURE) TRISTAN RINEY CONQUESTCHASEMOOR SOVEREIGNTYRENAISSANCETRIUMPHCHIVALRYPARUAMENT Windsor Loop288CC C CC CCC C CC C C C C C C C C CC C C CC C C S C S NL211NL211NL221NL211NL221DBLCKTW W W W WW W WWWW WW W WWW W W WWW WWW WNL222WNL213 TransmissionLine CrossingNL211, NL213, NL221, NL222 OverheadNL211, NL221 UndergroundDenton Corridor OH to UG Conversions: Elm from Loop 288 to WindsorLEGENDN- Approximately 2500' of overhead line (NL222) on the North side of Elm.- Approximately 1350' of overhead line (NL213) on the South side of Elm without attached joint comms.- Approximately 5150' of overhead lines (NL211 and NL221) on the South side of Elm with attached joint comms.- Approximately 4100' of underground lines (NL211 and NL221) along the North side of Elm.- About 61 poles, with streetlights and distribution equipment.- Roughly 12 affected services, both overhead and underground.Joint CommsFeet05001000ROADWAY 5 - US77/ELM ST AREA