sr 60 “twin pairs” - City of Vero Beach

impacted by the SR 60 lane reduction, including potential impacts to residential areas. Table 6 compares
the model volumes with and without the proposed lane reduction.
The most noticeable diversion of traffic is from SR 60 to 21 Street, which is a parallel street serving
Downtown Vero Beach. An estimated increase of 1,100 vehicles per day on 21 Street (or approximately
110 vehicles during the peak hour) is indicated in the GTCRPM analysis. As shown in Table 6, minimal
impacts are expected on the north-south local streets such as 10 Avenue, 14 Avenue, and 20 Avenue.
Intersection and roadway segment level of service analyses for the 2035 conditions are presented in the
next sections.
Segment
Table 6: Traffic Volume Diversion Analysis
2005
Conditions
(1)
2035 w/o
Lane
Reduction
(2)
2035 with
Lane
Reduction
(3)
Traffic
Volume
Differential
(4) = (3)-(2)
% Change
(4)/(2)
SR 60 – West of 20 Avenue 34,000 41,000 40,500 -500 -1.2%
SR 60 EB – 20 Avenue to 14 Avenue 15,800 18,750 18,150 -600 -3.2%
SR 60 WB – 20 Avenue to 14
Avenue
SR 60 EB – 14 Avenue to Commerce
Avenue
SR 60 WB – 14 Avenue to
Commerce Avenue
13,300 17,200 15,700 -1,500 -8.7%
14,950 16,200 15,800 -400 -2.5%
10,800 13,300 12,700 -600 -4.5%
SR 60 EB – Commerce Ave to US 1 13,100 14,400 13,750 -650 -4.5%
SR 60 WB – Commerce Ave to US 1 12,900 15,500 15,250 -250 -1.6%
20 Avenue – south of SR 60 4,750 4,750 4,650 -100 -2.1%
20 Avenue – north of SR 60 8,700 10,900 10,300 -600 -5.5%
14 Avenue – south of SR 60 8,200 10,050 9,950 -100 -1.0%
14 Avenue – north of SR 60 12,100 12,200 12,100 -100 -0.8%
10 Avenue – south of SR 60 4,150 9,000 9,400 400 4.4%
10 Avenue – north of SR 60 7,800 9,800 9,900 100 1.0%
21 Street – West of 20 Avenue 4,700 7,900 8,000 100 1.3%
21 Street – 20 Avenue to 14 Avenue 3,300 7,300 8,400 1,100 15.1%
21 Street – 14 Avenue to Commerce
Avenue
US 1 – Commerce Avenue to E of 10
Avenue
5,000 8,100 9,200 1,100 13.6%
16,500 17,050 17,250 200 1.2%
US 1 – south of SR 60 24,950 25,250 25,150 -100 -0.4%
US 1 – north of SR 60 13,300 12,100 12,100 0 0.0%
SR 60 “Twin Pairs” Traffic Calming Feasibility Study Page 14