5.1 Existing Traffic Characteristics Existing traffic characteristics for the study area were estimated based on traffic count data and information from FDOT Traffic Online (2017). Annual average daily traffic (AADT) were collected in the field. Table 1 summarizes the existing AADT characteristics for the study corridor.
Table 1. Existing Roadway Characteristics
Existing Adjusted AADT 1
AM Peak
PM Peak
CORRIDOR FROM
EB
WB
BOTH
EB
WB
EB
WB
TO
US 41
Waterset Boulevard Covington Garden Drive
16,700
15,300
32,000 1,230 1,410 1,420 1,130
Waterset Boulevard Covington Garden Drive
15,000
15,800
30,800 1,400 1,100 1,290 1,150
I-75 Southbound 18,100
17,800
35,900 1,410 1,160 1,200 1,480
Off-Ramp I-75 Southbound I-75 Northbound 30,900
15,300
46,200 1,960 1,010 2,340
950
Off-Ramp On-Ramp I-75 Northbound Simmons Loop
25,800
19,500
45,300 1,540 2,230 2,410 1,270
On-Ramp Simmons Loop Lincoln Road
Lincoln Road
24,800 25,800
21,200 22,200
46,000 1,500 1,970 2,230 1,380 48,000 1,330 2,050 2,090 1,440
US 301
Source: 1 AADT based on field collected data, HNTB 2018 2 K, D, & T factors based on FDOT’s Florida Traffic Online, 2017 5.2 Travel Times
Travel times were collected along the corridor during the AM and PM peak periods fromWest of Waterset Boulevard to East of Lincoln Road (Table 2). Ten passes made eastbound and westbound on Big Bend Road were collected and averaged. In the AM peak period most of traffic is moving toward the I-75 northbound and southbound on-ramps. On average it took about 10 minutes to drive from Waterset Boulevard to Lincoln Road in the eastbound direction and about 8 minutes in the westbound direction (Figure 9). There are lengthy queues at intersections prior to the I-75 on-ramps due to traffic not able to clear the intersections in one traffic signal cycle, especially in the westbound direction (Table 3). During the PM peak period most of traffic is exiting I-75 in the northbound and southbound directions and entering Big Bend Road via the off-ramps. There is a lengthy queue on the I-75 southbound off-ramp that extends onto the mainline of southbound I-75 as far as 8,800 feet (Table 4). Figure 10 depicts the queue length.
Table 2. Travel Times Roadway
Average Field Time (mins) - AM
Average Field Time (mins) - PM
Big Bend Road from Waterset Boulevard to Lincoln Road (EB) Big Bend Road from Lincoln Road to Waterset Boulevard (WB)
9:58 7:58
5:44 6:39
18
Hillsborough County • October 2019
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