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HomeMy WebLinkAbout10/24/2023 05. Discussion on the Yakima Trolley Infrastructure 1 .4. ! a, BUSINESS OF THE CITY COUNCIL YAKIMA, WASHINGTON AGENDA STATEMENT Item No. 5. For Meeting of: October 24, 2023 ITEM TITLE: Discussion on the Yakima Trolley Infrastructure SUBMITTED BY: Scott Schafer, Director of Public Works *Bill Preston, City Engineer, (509) 576-6754 SUMMARY EXPLANATION: Discussion is needed regarding the current state of the Yakima Trolley infrastructure. There are two areas of concern; the status of the bridge spanning over the Naches River and the trolley tracks within 6th Avenue. Staff will be providing an update to the Trolley Bridge Inspection report that was recently conducted by Sargent Engineers, Inc. in August. Staff is in need of City Council direction as to whether or not the City proceeds with the costly repair work as well as to determine possible funding sources. The Trolley Bridge Inspection report has been attached for City Council review. Staff will also discuss the 6th Ave/Trolley Track Repair project. In 2017, the City Council established the Transportation Benefit District (TBD)to address specific street and sidewalk improvement projects to be funded by an annual vehicle fee of twenty dollars ($20.00). City Council had approved the 6th Ave./Trolley Track Repair project as a TBD project. As the N. 1st St. Revitalization project is nearing its completion with Phase 3, the 6th Ave./Trolley Track Repair project is scheduled to be the next TBD project that staff addresses. The project is to remove and replace the trolley tracks and to reconstruct 6th Ave. with a grind & overlay from Yakima Ave. to Gordon Rd. Due to the significant cost of the project, staff wanted to provide City Council options prior to the start of the project. 1. Reconstruct 6th Ave./Remove/Replace Trolley Tracks -$6.9M 2. Remove/Replace just the Trolley Tracks -$3.9M 3. Reconstruct 6th Ave and Remove Trolley Tracks -$3M ITEM BUDGETED: NA 2 STRATEGIC PRIORITY: Public Trust and Accountability APPROVED FOR SUBMITTAL BY THE CITY MANAGER RECOMMENDATION: ATTACHMENTS: Description Upload Date Type D Trolley Bridge report 10/12/2023 Backup Material ❑ 6th AA,e options 10/12/2023 Backup Material 3 S 71 ENT Sargent Engineers,Inc. 320 Ronlee Lane NW Olympia,Washington 98502-9241 Tel 360 867-9284 www sarge nteng i nee rs.com August 1, 2023 Bill Preston, PE City of Yakima Engineering 129 North Second Street Yakima, WA 98901 (509)575-6111 RE: Yakima YVT Trolley Bridge Inspection Project No.: A23125.00 Dear Mr. Preston: INTRODUCTION The Yakima Valley Transit Bridge is a three-span bridge. Span one consists of timber stringers and timber supports, and span two and three consist of a thru steel truss. The bridge is located within Yakima's city limits. The railroad bridge was constructed in 1920 and is used by the city for trolly trains. The bridge is supported by two interior concrete pier walls, one concrete abutment, and one timber abutment. The two thru-truss spans have a steel floor system comprised of transverse steel floor beams and longitudinal steel stringers. The deck consists off transverse railroad ties with timber curbs full length. SCOPE OF WORK • Perform a fracture critical inspection of the bridge. This includes the inspection of all the primary structural components of the bridge (truss, floor • beams, stringers, and cross-bracing) • Conduct ultrasonic testing of each of the bridge's -31X by connecting pins '# kr" �x a • Document anyobserved deficiencies that may4`" .� affect the load carrying capacity of the bridge or � • require maintenance or repairs. r • Prepare a memo documenting our findings �" � including any maintenance recommendations . necessary ,� x} .r` ' ,, � r 4., 'fit i� d 1 • Prepare routine inspection report and update _ - WSBIS i .. 4 SARGENT Mr. Preston Page 2 August 1, 2023 STRUCTURAL OBSERVATIONS On June 19, 2023 Sargent Engineers observed the general condition of the bridge. The bridge members within reach using climbing techniques were visually inspected. For the purpose of this report, assume the bridge orientation to be generally South to North, with Span 1 being nearest City of Yakima. Below is a summary of our findings by member type. TIMBER DECK TIES There are 337 transverse timber railroad ties along the entire length of the bridge. The timber deck ties range from good to poor condition. Many of the deck ties have visible decay, internal tie rot, or burn damage which accounts for 36%of the total 337 timber ties. See attached images IM03 and IM04. TIMBER STRINGERS Span one consists of(6) 12"x27" treated timber stringers. Stringers 3 and 6 are moderately decayed with rot pockets up to 12"deep with approximately 1"side shells decay in stringer 1 is minor at this time. STEEL TRUSSES There are two painted steel thru-truss main spans. Overall, the paint condition of the bridge is in good condition. Minor pack rust has developed under the top cover plates both sides of bridge at U2, U5, U8 and U11. There is a small isolated delamination in the Cross brace between U3 east to U4 west. Ultrasonic testing of each of the pins resulted in the finding of an indication in the Span 2, L1 West pin. See attached image IM05 and IM06. STEEL FLOOR BEAMS There are four transverse painted steel floor beams at each truss panel point along the main spans. The steel floor beams and the paint are in good condition. Previous painted over pack rust has deformed the vertical floor beam end plates at the panel point just above the pin up to 3/4". There is no observed section loss. See attached image IM07. STEEL STRINGERS There are two longitudinal painted steel stringers spanning between floor beams. The stringers consist of built up steel plate members. The steel stringers are in good condition. The paint is in good condition with no observed signs of water intrusion. See attached image IM14 through IM15. STEEL BEARINGS There are fixed and movable bearings below the truss ends. The bearings are in good to fair condition. There is minor deformation to the roller stop plates of the East roller bearing at pier 3. Minor rusting exists where the rollers contact the bearing plate. See attached image IM08 through IM09 5 SARGENT Mr. Preston Page 3 August 1, 2023 CONCRETE PIER WALLS The interior substructure elements consist of concrete pier walls. The concrete pier walls are in fair condition. The concrete is moderately cracked with pattern cracks extending down the pier wall face. The decorative column caps are deteriorating with large spells and cracking. See attached image IM11 A large drift dam exists between Pier 3 and the southern bank. There is scour along the footing at Pier 3. Measurements were taken along the accessible edge of the footing with a maximum of 3.5'from the top of the footing to the channel bottom at the upstream end. This is a 1.5' increase since the previous inspection. See the figure below, and attached images IM12 &IM13. COBBLE/BOULDER SPUR OLD COFFER DAM 3.5' FACE 2.D' FACE 3.5' FACE 2.0' =ACE 2.5' FACE BOULDER 2•0' RIP RAP FACE PIER WALL FOOTING DRIFT DAM BACK WATER PIER 3c1 CONCRETE ABUTMENT The abutment at the bridge north end consists of a concrete wall. The concrete abutment is in relatively good condition. There is some spelling of the decorative caps. See image IM10 6 SARGENT Mr. Preston Page 4 August 1, 2023 TIMBER ABUTMENT The south timber abutment is in poor condition as documented in the South Abutment Inspection report, included as Appendix A to this report. SUMMARY The steel thru truss is in relatively good condition. There is only minor pack rust that has developed at the previously mentioned floor beam connections. The Pier 3 pier wall footing scour has increased since the previous inspection. It is unknown how much of the foundation has scoured and may warrant continued monitoring of the foundation. The damaged/deteriorated timber ties are in poor enough condition that replacement is warranted. Span one timber stringers 3 and 6 were found to be moderately decayed with rot pockets. These decayed stringers are not believed to last long under proposed use. RECOMMENDATIONS • Replace decayed timber stringers 3&6 in Span 1 in kind • Replace the damaged/decayed timber deck ties in kind • Replace south timber abutment • Perform ultrasonic test of Pin S2-L1 West • Monitor Pier 3 foundation for scour • Brush back vegetation growing into Span 2 Truss Attached are observation photos and a rough order of magnitude estimate to assist in planning for the completion of the above recommendations. The estimate incorporates costs associated with the south timber abutment replacement recommended in the South Abutment Inspection report. Thank you for this opportunity to assist you with this project, if you should have any questions, please do not hesitate to call. Respectfully, Sargent Engineers, Inc. p oRONiN was Q �� cooG -0 51096 Craig Mallow, PE 1 4'F�ISTE014.v Senior Project Engineer SS/OVAL � qgc, Encl. B:\23Files\W23125.00 YVT Bridge Inspection\Reports\Report_Yakima Valley Bridge.docx 7 Preston SARGEN Mr. Page 5 August 1, 2023 . ,,. .., ...-.... .• . . ... , - -_ , ..... , . .. .., .. ,... .... .,:a,, ..,, • 41... •. . ;, 41111it, ,- . : • *, .._. „.. • '' 1. . . iilk . -,;T 111hViv4rrtr r ' -- w-,itipifkom-- ,*-c'-' • .-..,,,7-..--4-::..„.- -...: , --.-,.;,- ---/...:•:1-7-----,,,-,,, !••••;\ --,,,-_ - . '''.---,- -. . .3r7/,,-: :-:-:._;.-:,,:..----,-,-----t r...—...r,-__-, i: , 1;":.-- IM01 —Elevation looking Southeast IM02—Elevation Through Truss -,- .., •.,. - . , --,. ,......i. ,... ..,„ A' -,,. ',3:' ,,.*_..:,..'"' • ",.-.?;, i''''''''''-'"i.:-.-..„-,:-... .: : , '", •--: .-.1,.4..0j-'°'37..,,,-_,...;,- ---."_ .. ---,,..,.. '- --.-;:',", .- „:4.,,-.,'e, . -,,!.,,,.., ---_,, . . . .. .. _ . . _, • .,....„, ... , •-, 4:2' , -- ,:::-.-- : - -'4,.."," _,‘!•,...,..._,.. ,. -- - •+'5,,,,,,• ' . . , m -- --„. •. . . :!) ,,,,,,,er :,,,--:. • ... „,- ,,::.-.. - .... .it.•, , ••• ..,.,_ , . . . . : , ,,,,...i.,,'' -..',.:' ' ,. •-•,',.-,.. „ - • I IM03—Charred Timber Deck M04—Decayed Deck Timber .1 ..." -, .........""7- ' . . i I, ...'°'''.'.'4.. '''' ' .'•. ' I ,- Iv-"'4 .'- '../: — ' ---, :. - \ . N , - ' . , r4-lb: ,....- - ..--, j' :,-----.._-_-.-_--,---:''' ....__ ,.___.„,.. .... ..., _....., ,..z . _ ---0-70'. ,..._,...........,.. .. ..- ../4 ,..„.... e1) '---i.... 1.,,,e.---,-,.71--.....N.-.* ,.,,,,`•••_, __,.06..,.----.: 6*111,.-- ',' 1 ky, .....4..,..,:, , :-... ':' \.,4 ' , , -",'•!',f 1:., i''', if t.::.54,k% .,,17,*...-.-,•;,,. ,- - 1M05—Pack Rust Under Top Plate IM06—Delam in U3 East, U4 West Cross Brace 8 S1. RGEIIT Mr. Preston Page 6 August 1, 2023 wT fD - OV% .a 3Of "j*Nig.,., X,'- f .` IF-0,t a.. A IM07—Typ. Pack Rust at Floor Beam Pannel Point IM08—Typ. Roller Bearing • sue... a=e'" s� p� tr a tea.;' p �t- "y,"a,r rr,� 4. 1- �"k' 't ,1'r ,fib "''• n- V -ems -;'fit ''= i : IM09—Typ. Fixed Bearing IM10—Concrete Abutment(A4) • � ! " v9E„r ,B r raY8,p!- f ,i -Mr e",. -• ,d f. F'' ?rY .J te 4 9ilNr!t _, IM11 —Pier 3 Erosion Looking West IM12—Drift Dam Between Pier 3 and South Bank 9 SARGENT Mr. Preston Page 7 August 1, 2023 ' . j1r,.‘N , i I 4 \li ,, ..v i Aiiii4 * - ., i ; ' 1 , m " • ; it p , r. 1 1 11 4,1, ,,'" '4' • _2________------ itivi Image 13—Typ. Cracking/Spalling in Pier Wall Image 14—Typ. Stringer and Floor Beam Condition �A\ 4,;.,,,, , ,,,44.4 .f....„,-_-.5,-, -----,_4•Airii . ..k 84, ..k .,,..i„..... ,.., ...,, ,i.,4,,,,,ti. ; ,..:=:,.:4.:;_. . ,,,:. ,, I ,Ito Illift„ ,, ^. _ ? ,:" Image 15—General Construction from Below Image 16—Foliage in Span 2 Looking North '.; s 44 -. ::‘,..-' ' Arti_44„,b ,,. , i ? „ ,StM° F'.5lwa r..J ____ 1 f� !�•..ti ✓ Pam`' k /"..I ,i '. .,A K `f ye ,. —, ., _ w ,`ryy [�' t, � of s/ _ �y� ,,, -,i' .,,,, ,.0 R S p m 't[� t> �C A''Ai l` Image 17—Pier 2A and Pier 2B Image 18—Under Span 1 Looking at Abt 1 10 SARGENT Mr. Preston Page 8 August 1, 2023 ROUGH ORDER OF MAGNITUDE CITY OF YAKIMA WT TROLLEY BRIDGE ROM COST ESTIMATE ITEM DESCRIPTION UNIT QTY UNIT COST COSTS Remove and Replace Timber Stringers 1 L.S. $ 40,000 $ 40,000 Remove and Replace Timber Ties 1 L.S. $ 35,000 $ 35,000 Replace South Timber Abutment 1 L.S. $ 104,500 $ 104,500 Ultrasonic Pin Inspection 1 L.S. $ 10,000 $ 10,000 Clear Brush 1 L.S. $ 3,000 $ 3,000 Subtotal = $ 192,500 PE Costs (25%) EST. 1 ---- $ 48,125 Right of Way Costs EST. 0 ---- $ - Construction Engineering (18%) EST. 1 ---- $ 34,650 Contingency (15%) EST. 1 ---- $ 28,875 Mobilization (10%) L.S. 1 ---- $ 19,250 Inflation Factor(5% per year) YEAR 1 ---- $ 9,625 Total Costs for Rehablitation $ 333,025 11 SARGENT Mr. Preston Page 9 August 1, 2023 APPENDIX A 12 S ENT Sargent Engineers,Inc. 320 Ronlee Lane NW Olympia,Washington 98502-9241 Tel 360 867-9284 www sa rgenteng i nee rs.com June 17, 2023 Mr. Bill Preston, PE City of Yakima 129 North Second Street Yakima, WA 98901 RE: Yakima YVT Trolley Bridge-South Abutment Inspection Project No.: A23125.00 Dear Mr. Preston: On May 2, 2023, Craig Mallow and Chet Kocan of Sargent Engineers, Inc. made a site visit to inspect the abutment deterioration on the Yakima Valley Trolley Bridge over the Naches River. The structure is 324 foot long carrying a single-track railway in a generally south to north direction from the north end of Yakima, Washington toward Selah, Washington. The three spans are a 26-foot-long timber girder span and two 149-foot steel through truss spans. The deteriorated south timber abutment supports one end of the 26-ft timber girder span. The following observations are for the south timber abutment. The timber foundation is comprised of individual 8x12 timber sill footings. The foundation supports a 12x14 transverse timber cap. The cap supports the superstructure which is comprised of (6) 12x27 longitudinal timber girders and 8x12 timber deck ties spaced 18" on center. The backwall retaining the approach fill is comprised of 6x16 timber lagging stacked (3)high. 8x12x10—ft 0 18"o.c. Timber Deck Ties, typ. 6x16 Timber—\1/4 A X 47 g Lagging, typ. 1l 12x27 Timber 12x14x15—ft Girders, typ. - limber Cap ±8x12 Timber Sill Foundation • The first timber tie behind the timber lagging has settled resulting in an approximate 3" gap between the rail track and the tie. • The timber sill footings are severely decayed and crushed. There was no need to sound or drill the sills to determine the extent of remaining material. They are in a failed state. (Image next page) • The timber lagging back wall is moderately to severely decayed. While sounding with a hammer, the backwall was punctured to decay. Currently, the backwall is still functioning as fill retention, but due to decay, there is little remaining service life. (Image next page) • The timber cap was sounded using a geologist's hammer to locate any possible decay. No signs of decay were observed. 13 S/MGEN1' Yakima YVT Trolley Bridge South Abutment Inspection Page 2 PHOTO DOCUMENTATION s _ �� Settled Approach Tie 7 -.. i ..i11 d : of s' T' ,01 - /Sr ,( ! "1,. t ' 4 yam. k,1 �i - {,� Mi '' ' Severely Decayed '` 5 -F Decay Hole in Timber Sill Footing,, A,h Timber Lagging CONCLUSION The timber sill footings have failed and the timber backwall is moderately to severely decayed. If trolley traffic were allowed to cross the bridge in this condition, there is significant risk that the abutment will collapse under the trolley's weight. The timber sill footings are approximately 8-inches thick and would initiate the collapse by crushing, causing the timber girders and rails to abruptly sink and possibly tilt,which could cause the trolley to derail. Given the failed condition state of the sill footings, there is no reliable strength remaining to support the superstructure. Guidance provided within the WSDOT Bridge Inspection Manual states"bridges not capable of carrying a minimum gross live load of three tons shall be closed." As such, due to the observed failed condition state, potential for collapse under trolley loads, and guidance provided by the governing inspection agency, we recommend closing the bridge to trolley traffic until repairs are made. Repairs can be completed by temporarily shoring the existing timber girders, removing the decayed timber elements, and replacing them with a new foundation and backwall. Once the foundation elements are replaced, regrading and compacting the approach fills will be required. To improve maintenance and service life,we recommend replacing the timber sill footings with a reinforced concrete footing and the timber backwall with a reinforced concrete or corrugated steel backwall. We estimate a rough order of magnitude of$115,000 plus permitting and engineering to complete this work. Please contact us with any comments or questions or if you need additional services such as assembling repair plans and specifications. Sincerely, RRON �I Sargent Engineers, Inc. `� Poc WAS,1'"`9<i Nr Craig Mallow, P.E. -0 51096 Senior Project Engineer �o s oisT E��`sr v —Is C- .. 6/17/23 CAM B:123Files1A23125.00 YVT Bridge Inspection\AbutmentReport.docx 14 6th Avenue Reconstruction Walnut Street to River Road Reconstruct 6th Avenue and replace trolley tracks: Estimate: $6,900,000 • Currently on the TBD project list • Two years in Design, includes Environmental • Earliest construction 2024 • Does NOT include trolley pole and wire replacement • Would need to bond or take at least 4 years of TBD revenue. No other TBD projects would be worked on during this effort without bonding (or another revenue source) Remove/replace just the trolley tracks: Estimate: $3,900,000 • Does NOT include trolley pole and wire replacement • 6th Ave reconstruction would follow some time later • Would improve the ride for the trolley but wouldn't do much for the automobiles • Makes the road reconstruction more difficult because we have to avoid damaging the new trackwork. • Would need to bond or take at least 2.5 years of TBD revenue. No other TBD projects would be worked on during this effort without bonding (or another revenue source) Replace road and remove tracks: Estimate: $3,000,000 • Easier and less expensive to improve 6th Avenue. Would still have to remove all the ties and rails and completely rebuild that section of the roadway • Would 2 years of TBD revenue. May be able to fund with current fund balance • If ANY previous Recreation and Conservation Office (RCO)funding for trolley projects was used by the City,those funds would be required to be paid back. • Other prior federal funds used by the City for trolley projects MAY also be required to be paid back. • Trolley impacts: All of the following would create difficulty in getting through the environmental process o Would effectively kill the trolley system leaving only the short run down Pine and leaving no way to get access to the gap and into Selah. Would no longer be an "interurban trolley line". o The YVT is listed on the National Register of Historic Places. o YVT is in the process of getting the Trolleys Registered as a National Historic Landmark. Attaining National Historic Landmark status would help the trolley line find more sources of grants and funding crucial to ensure the vintage trolley railroad's survival. It could also help with publicity. o Yakima's trolley railroad is the last historically intact interurban railroad in the United States. Its trolleys are America's last intact, early 20th century, interurban electric railroad cars. The YVT currently has a matching grant to restore the Brill car up to $150,000. If they get less they still get a match. o The City got a grant from the Washington State Heritage Capitol Projects program for $49,926 in 2016. The City allocated $100,000 for YVT improvements in the 2015 budget. o There was also another HCP grant: HCP 17-33 Yakima Valley Trolley Capital Project Grant