I-4 Ultimate

Project Update

and

Noise Barrier Meeting

Project Location

21 miles through greater

Orlando

Two counties

Two water management

districts

Several municipalities

Two major funding

partners

Managed

Lanes

4 Managed Lanes

6 General Use Lanes (GUL) + Auxiliary Lane

Project Goals

Replace aging infrastructure

– Corridor is 50 years in age

– Bridges projected to become

structurally deficient

– Pavement deterioration

Project Goals

Create jobs

– Construction industry jobs are down since 2007

– Available local labor pool

– $1 billion spent on highways supports 28,000 jobs

How To Stay Involved

• All Meeting Information on Moving-4-ward website

• Sign up on website to stay informed

• Community Surveys

• www.moving-4-ward.com

Procurement Schedule

Shortlist and draft RFP June/July 2013

Final RFP and Instructions to Proposers (ITP) September 2013

Proposals due February 2014

Best value selection April 2014

Financial Close July 2014

Notice to Proceed 1 – Design Fall 2014

Notice to Proceed 2 – Construction NTP1 + ~ 3 months

Project Video

Video is available for viewing on the

moving-4-ward.com website in the

presentations section under:

Noise Barrier Meetings Materials

Noise Barriers:

Who benefits?

Only homes next to the noise barrier, or within

the 200 ft. shadow of the wall will get a noticeable

noise reduction

Goal of reduction is 10 decibels with a minimum

of 5 decibels

Noise Barriers:

Criteria for use

Consideration for the implementation and

construction of noise barriers along Interstates is

mandated by the Federal Highway Administration

and follows certain criteria.

Evaluation for the expansion of Interstate 4

included noise studies to determine areas that

would exceed Florida’s Noise Abatement

Criterion of 66 decibels (dB)

Noise Barrier:

Criteria for use

COMMON OUTDOOR ACTIVITIES NOISE LEVEL dB(A) COMMON INDOOR ACTIVITIES

Jet Fly-over at 1000 ft ---110--- Rock BandGas Lawn Mower at 3 ft. ---100---Diesel Truck at 50 ft., at 50 mph ---90---Noise Urban Area (Daytime) ---80--- Garbage Disposal at 1 m (3 ft)Gas Lawn Mower at 100 ft. ---70--- Vacuum Cleaner at 10 ft

---66--- Normal Speech at 3 ftCommercial Area ---60---

Large Business OfficeHeavy Traffic at 300 ft ---50--- Dishwasher Next RoomQuiet Urban Daytime ---40--- Theater, Large Conference Room

(Background)Quiet Urban Nighttime ---30--- Library

Bedroom at Night, Concert HallQuiet Suburban Nighttime ---20--- (Background)Quiet Rural Nighttime ---10---Lowest Threshold of Human Hearing ---0---

Source: California Dept. of TransportationTechnical Noise Supplement, Oct. 1998, Page 18.

“Reasonableness and Feasibility Factors” for

the placement of noise barriers are derived from

federal guidelines. These determine if a barrier

should or should not be placed in a local

community.

Noise Barriers: Reasonableness

and Feasibility Factors

Noise Barriers: The Myths

Noise barriers are not used to block the view of

traffic from their homes. They are strictly for

noise abatement.

Noise barriers are not protective barriers. They

might slow a car down but are not used for safety

purposes. However shoulder mounted barriers

have been crash tested.

Noise Barriers:

How They Work

There cannot be any openings in the barrier for driveways or roads because it would not be an effective noise barrier.

The noise barriers work by reflecting the sound waves back toward traffic. People on the opposite side of the roadway from the walls will not notice a significant increase in sound if any at all. If there is an increase it is usually between 1-2 dB which is less than the average person can audibly detect.

Barriers are designed to make a 10 dB reduction in sound but may only reach the minimum of 5 dB. Only residents within the 200 ft. shadow of the barrier, depending on the height, will notice a reduction.

Noise Barriers:

How They Work

The greatest reduction of noise will be right next to the barrier and

the benefit will gradually decrease from there out to the shadow’s

edge. As sound waves travel they begin to diminish.

Noise Barrier Advantages

and Disadvantages

Advantages

• Can provide an audible reduction in highway traffic noise to areas directly

behind the barrier

• Can be designed to be aesthetically pleasing from both the highway and

property owner sides of the barrier

• Can provide privacy from passing motorists

Disadvantages

Can block the view of commercial or landmark signs

Can adversely affect existing ornamental vegetation in proximity to the barrier

Trees within the FDOT R.O.W. may be removed in order to construct this noise

barrier

Can create nighttime shadow areas

Noise barriers can obstruct breezes and sunlight

Noise barriers may attract graffiti

Noise barriers may reduce, but cannot eliminate, the traffic noise

Noise barriers may present a public safety concern because the view of police

and other safety patrols traversing the highway will be blocked.

Noise Barrier: Shoulder

Noise Barrier: Ground

Recommended

Noise Barrier Locations

Conclusion - Questions

• Our Presentation is concluded

• All Materials from tonight's presentation will be available on the

project website at www.moving-4-ward.com

• Please take a few moments to view the graphics on display

• FDOT and RS&H Staff are on hand to answer any questions you may

have