Fondren Road Paving and Drainage Improvements Creekbend to West - PowerPoint PPT Presentation

Fondren Road Paving and Drainage Improvements Creekbend to West Airport (WBS No. N-100021-0001-3) T RC Pre se nta tio n Da te : Ma rc h 15, 2016 1

Agenda Pro je c t lo c a tio n Pro po se d impro ve me nts • • Ove rvie w Re c o mme nda tio ns • • Sc o pe o f wo rk De via tio ns fro m Pre - • • E ng ine e ring F ie ld o b se rva tio ns • Va ria nc e s & Pe rmits E xisting finding s • • 2

Project Location Cre e kbe nd Co unc il Distric t K • Bo unda ry stre e ts: Cre e kb e nd a nd We st • Airpo rt Appro xima te ly 1.5 mile s • We st Be llfort Ma jo r inte rse c tio ns: We st Be llfo rt a nd We st • Airpo rt Pre -E ng ine e ring study in ye a r 2013 • Pub lic Me e ting • Po rta l a nd L ud ing to n sig na l impro ve me nts – We st Airport Cut thro ug h tra ffic issue s – 3

Overview F o ur (4) sig na lize d inte rse c tio ns L a nduse • • T wo (2) HCF CD c ha nne l c ro ssing s • Sc ho o ls • ME T RO ha s 21 b us sto ps • Churc he s • Se ve ra l tr e e s • 4

Scope of Work Sc o pe o f Wo rk Purpo se Re vie w a nd ve rify Pre - I mpro ve mo b ility • • E ng ine e ring finding s I mpro ve dra ina g e • I de ntify de via tio ns I mpro ve utilitie s • • Pe rfo rm dra ina g e a na lysis • I de ntify utility c o nflic ts • Pre pa re PE R re po rt • 5

Field Observations Ro a dwa y in po o r c o nditio n Pa ve me nt in po o r c o nditio n Pa ve me nt se ttle me nt F a ile d Aspha lt pa tc h in c o nc re te 6

Field Observations Da ma g e d c urb , e xpo se d re info rc e me nt Side wa lk in po o r c o nditio n E sta b lishe d T re e s I ro n fe nc e e nc ro a c hing the Rig ht-o f-Wa y 7

Street Assessment 8

Existing Cross Sections We st Air por t to Sanfor d Dr ive 6 la ne s w/ 14-fo o t • me dia n 6 to 12-inc h c o nc re te • 3-inc h sub g ra de • 4 la ne s w/ 32-fo o t • Sanfor d Dr ive to Cr e e kbe nd me dia n 6 to 10-inc h c o nc re te • thic kne ss 3-inc h sub g ra de • 9

Existing Utilities Stor m: T e le c ommunic a tion: Wa te r : 24 to 48-inc h RCP 16-4 inc h PVC d uc t line s • 20-inc h CI • • b e twe e n We st Be llfo rt to Built in 1970’ s • Built in 1974 • Cre e kb e nd Se ve n o utfa lls • L o c a te d o n we st sid e • Co mc a st ha s fib e r o ptic • T ype B a nd BB inle ts • und e r sid e wa lk c a b le b e twe e n Po rta l Sa nita r y: Drive a nd Ba nksid e Ga s: 27 to 42-inc h 2, 4 a nd 6-inc h IP ste e l L o c a te d in e a se me nt o n • • • Built in 1974 e a st sid e L o c a te d in e a se me nt • • Re ha b ilita te d in 2004 o n we st sid e • L o c a te d o n e a st sid e Multiple c ro ssing s • • 10

Existing Traffic Analysis (Pre-Engineering) 2011 2035 Gr owth Str e e t Se g me nt ADT ADT R a te Cre e kb e nd to 23,728 30,368 1.30% We st Be llfo rt F ondr e n R oa d We st Be llfo rt to 24,002 29,681 1.25% We st Airpo rt 2013 2013 2035 2035 Po rta l Drive Str e e t Inte r se c tion AM PM AM PM Sig na l upg ra de unde rwa y – Por ta l A A A A We st Be llfo rt Spa n wire d sig na ls – We st Be llfo rt A D D E L uding to n F ondr e n R oa d Sig na l upg ra de d in 2015 – A A A A L uding ton We st Airpo rt Sig na l upg ra de d in 2013 – We st Air por t D D D E 11

Bike Route No bike lane a lo ng F o ndre n • F uture b ike la ne F o ndre n • so uth o f We st Airpo rt F uture b ike la ne a lo ng We st • Airpo rt a nd We st Be llfo rt F uture b ike la ne a lo ng • Cre e kb e nd 12

Geotechnical & Phase I ESA Ge ote c hnic al Inve stigation Phase I E SA Inve stigation Co he sive so ils • One (1) ha za rdo us • F a ults : 4 mile s so uth • ma te ria ls spill inc ide nt Gro und wa te r le ve ls :4 to 15 • E ig ht (8) RE C • fe e t F urthe r inve stig a tio n • Pa ve me nt : 12-inc h JRCP • Sub g ra de : 8-inc h lime • sta b ilize d 13

Floodplain Map • Cre e kb e nd to Ba nkside lie s outside the 500-ye a r flo o dpla in • Ba nkside to L uding to n lie s in the 100-ye a r flo o dpla in • L uding to n to We st Airpo rt lie s in the 500-ye a r flo o dpla in 14

Overland Flow & Flooding Complaints Ove r land Ar e a F low ID (ac r e ) ODA-B 44 ODA- D1 76 ODA- D2 197 ODA- F 295 ODA-G 44 Ove r land Dr ainage Str uc tur al F E MA 311 F low Syste m F looding L osse s F looding Ar e a Syste m B ODA-B 0 0 0 Syste m D ODA-D1 0 6 0 Syste m D ODA-D2 0 1 0 Syste m F ODA-F 0 4 0 Syste m G ODA-G 0 0 0 T otal 0 11 0 15

Drainage Analysis Bankside Ra tio na l me tho d • Sma ll Wa te rshe d Hydro g ra ph me tho d • We st Be llfor t XP-SWMM • T a ilwa te r: • L udington 2-ye a r : to p-o f-pipe (c ro wn) – 100-ye a r: Willo w Wa te rho le 10-ye a r WSE – 100-YR WSE 60.50, 10 YR WSE 56.80 a nd NG 59 – to 61 We st Air por t 16

Existing Drainage Analysis Re sults o f the hydra ulic a na lysis: • Syste m E and Syste m G do no t a de q ua te c a pa c ity to c o nve y 2- – ye a r ra infa ll e ve nt. and Syste m G do no t ha ve c a pa c ity Syste m D, Syste m E , Syste m F – to c o nve y 100- ye a r ra infa ll e ve nt. Syste m D, b e twe e n L uding to n a nd We st Be llfo rt is lo c a te d in 100-ye a r • flo o dpla in a nd the surro unding a re a a re inunda te d b y mo re tha n six (6) inc he s 17

Proposed Drainage Analysis Pr opose d Pipe Str e e t Na me Syste m Size De te ntio n vo lume s pe r 2015 IDM • Syste m A - Syste m B - Re q uire d d e te ntio n vo lume is • Syste m C 30-inc h pro vid e d a s in-line d e te ntio n 24-inc h to 6 X 6 F ondr e n R oa d Syste m D RCB Syste m E 30-inc h Mo st o f the in-line d e te ntio n is • Syste m F 36-inc h pro vid e d fo r Syste m D, a s the 30-inc h to 4X3 Syste m G RCB a re a is within 100 ye a r flo o d pla in De te ntion Ca lc ula tion Summa r y Impa c t Ca use d b y Inc re a se d Pa ve me nt Width T he o utfa lls will re ma in unto uc he d • Inc re a se in Re q uire d City De te ntio n Vo lume Str e e t Impe rvio us De te ntio n a nd will a c t a s re stric to rs Crite ria Me tho d Pro vide d Na me Are a Vo lume (a c - (a c ) (a c -ft) (a c -ft) ft/ a c re ) F ondr e n 1.34 0.50 0.67 In-L ine 0.67 R oa d 18

2 YR HGL Comparison D140-03-00 D140-01-00 62 60 58 56 We st Airpo rt We st Be llfo rt Ba nkside uding to n 54 Po rta l 52 L 50 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 A B C D E F G E xist 2-YR Pro p 2-YR Gutte r E le v 19

100 YR HGL Comparison We st Airpo rt We st Be llfo rt uding to n Ba nkside Po rta l 65 64 63 L 62 61 60 D140-03-00 D140-01-00 59 58 57 56 55 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 E xist 100-YR Pro p 100-YR ROW 20

Pre-Engineering Recommendation Six (6) 11-fo o t la ne s • 14-fo o t wide me dia n • 10-fo o t le ft turn la ne s • 10-fo o t pe de stria n • re a lm 6-fo o t Side wa lks • Note : 10- foot le ft tur n lane s 21

Alternative 1: Proposed Cross Section F o ur (4) 11-fo o t inside • la ne s T wo (2) 12-fo o t • o utside la ne s 14-fo o t wide me dia n • 10-fo o t le ft turn la ne s • 9-fo o t pe de stria n • re a lm Note : 10- foot le ft tur n lane s 5-fo o t (min) Side wa lks • 22

Alternative 2: Proposed Cross Section Six (6) 11-fo o t inside • la ne s 15-fo o t wide me dia n • 11-fo o t le ft turn la ne s • 9.5-fo o t pe de stria n • re a lm 5-fo o t (min) Side wa lks • Note : 11- foot le ft tur n lane s 23

Proposed Public Utilities 24

Proposed Public Utilities 25

Proposed Public Utilities 26

Proposed Intersection Analysis (Pre-Engineering) Sa nfo rd a nd So uthme a do w a re ne w • sig na ls 2035 2035 Str e e t Inte r se c tion AM PM Pre -E ng ine e ring tra ffic study Po rta l A A • A A Sa nfor d re c o mme nde d dua l le ft turns a t We st We st Be llfo rt C D F ondr e n Airpo rt a nd We st Be llfo rt, ho we ve r re po rt R oa d L uding to n A A c o nc lude d sing le le ft turn due to ROW South A A Me a dow a c q uisitio n limita tio ns We st Airpo rt D D GUNDA re c o mme nds lo ng e r “sto ra g e • le ng ths” a t We st Airpo rt a nd We st Be llfo rt 27

West Airport 250’ 250’ Me dia n c o nso lida tio n • Sig na l upg ra de d in 2013 • Drive wa ys c lo se to inte rse c tio n • ROW a c q uisitio n c o nstra ints • Co rne r c lips • Sto ra g e le ng ths o f 250 fe e t • Sig na l re de sig n re c o mme nde d fo r le ft turn la ne s • 28

Southmeadow (Proposed) Pro po se d sig na l pe r Pre -E ng ine e ring • T ra ffic Sig na l Wa rra nt Ana lysis ne e ds • to b e pe rfo rme d E xisting pe de stria n c ro ss wa lk striping • 27-inc h sa nita ry se we r re lo c a tio n • 29