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Development and Implementation of a Performance-Related Specification for SR 9a, Florida: Final Report

Chapter 2: Overview of Florida SR 9A construction Project

Location

The PRS developed and evaluated in this study was implemented on a relatively short highway construction project located on SR 9A (I-295 Leg) in southeast Jacksonville (see figure 2). As part of a multiyear effort to complete the I-295 loop on the city's east side, this project (Financial Project 209600-1-52-01, State Project No. 72002-3563) involved the construction of 0.420 mi (0.676 km) (2,217 ft [675.7 m]) of six-lane mainline pavement; a 0.169-mi (0.272 km) (894-ft [273 m]) bridge over SR 5 and the Florida East Coast railway; entrance and exit ramps for the SR 5-9A interchange; and various roadside improvements, all occurring between mileposts (MPs) 23.401 and 24.916 (stations 207+00 and 127+00) of SR 9A. As shown in figure 2, the PRS was applied to the PCC mainline pavement (excluding the bridge) located between MPs 24.496 and 24.916 (stations 149+17 and 127+00).

Figure 2. State Road 9A construction project location.

Figure 2. Map and chart. State Road 9A construction project location. A map shows Jacksonville, Florida, and surrounding areas and highways, including I-95, SR 9A and SR 5, and US 1. A circular diagram tied to the map shows the project site, a section of SR 9a (I-295 Leg) that passes over US 1 and SR 5, as well as the Florida East Coast Railway via a bridge. The beginning of the project is shown at milepost (MP) 24.916, near the western end of the bridge. The bridge begins at MP 24.866, Sta 129+62 and ends at MP 24.697, Sta 138+57. The pavement subject to PRS ends at MP 24.496, Sta 149+17.52, east of the bridge, and the project as a whole ends at MP23.401, Sta 207+00, further east. Cloverleaf ramps connecting SR 9A and US 1/SR 5are also shown.

Description

The SR 9A project was let in September 2001 and was awarded to AMEC Civil, LLC, in October 2001. The project letting included provisions and a pre-bid meeting on July 19, 2001, covering the use of the PRS. Following a pre-construction meeting on June 12, 2003, PRS project concrete paving of the northbound mainline occurred on January 8 and 9, 2004. Southbound paving east of the bridge was completed on June 6, 2005.

As seen in figure 3, the geometric design of the mainline pavement consists of three lanes in each direction located between MPs 24.496 and 24.916 (stations 149+17 and 127+00) and a fourth speed-change lane located between MPs 24.613 and 24.916 (stations 143+00 and 127+00). The design includes tie bars for connecting adjacent slabs to one another and for connecting the inside and outside slabs to the concrete shoulders, 8 and 10 ft (2.4 and 3.0 m) wide.

Figure 3. Layout of SR 9A pavement project.

Figure 3. Diagram. Layout of SR 9A pavement project. An overview of the project between Sta 127+00 (~ MP 24.916) and Sta 149+17.52 (~ MP 24.496) shows three lanes approaching from the south (14 ft wide on the outside lane, the others 12 ft wide), joined by a fourth lane before reach the bridge, at Sta 143+00 (~MP 24.613). This 14 ft wide lane carries traffic entering SR 9A from US 1/ SR 5, and it continues past the bridge (the end of the fourth lane is not shown). Exiting the bridge, the fourth, outside, lane is 14 ft wide; the three other lanes are 12 ft wide. The ends of the bridge are shown as Sta 129+62.99 (~MP 24.866) on the north and Sta 138+57.24 (~MP 24.697) on the south. The diagram shows the same three-changing-to-four lane configuration in the southbound lanes.

The JPCP design was for PCC 12.5 in. (320 mm) thick with perpendicular, doweled (diameter 1.25 in. [32 mm], spacing 12 in. [304.8 mm]) transverse joints spaced every 16 ft (4.9 m). Dowel baskets were used for the transverse joints. Support for these JPC slabs was to consist of 12 in. (304.8 mm) of permeable rigid pavement subgrade material and 36 in. (915 mm) of select material, placed on constructed embankment. Longitudinal joints were tied using No. 4 steel tie bars spaced at 24 in. (600 mm). These bars were inserted during the paving process. Longitudinal edge drains were included in the design to help remove water from the pavement system.

SR 9A is located in a wet-nonfreeze climate. The mean daily temperature in the area ranges from about 56 °F (13 °C) in January to 83 °F (28 °C) in July (National Oceanic and Atmospheric Administration [NOAA], 1983). The mean annual number of days above 90 °F (32 °C) is approximately 57, while the mean annual number of days below 32 °F (0 °C) is approximately 9. The mean annual precipitation is about 51 in. (1,295 mm).

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Updated: 04/07/2011

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