Providence CityDeveloping and Implementing a Long Term

Pavement Management Systemfor City Streets

City Streets – Biggest Complaint

•We have the worst streets in the valley• The street in front of my house is the worst in Providence•When are you going to fix the streets in my neighborhood?•Why are you doing maintenance on streets that were just

paved?• The street is so rough, my car will need a new suspension• I thought the city had all this money, so why can’t the streets

get fixed?

How Do We Address the Problem?We Were Looking For

• A 3rd party, independent evaluation of Providence streets• A starting point for a City-wide long term

maintenance/repair/replacement plan• An evaluation of every City block• Specific cost-effective maintenance/repair/replacement

recommendations• A multi-year plan that addresses every City street• Industry expertise

Who Did We Hire to Do the Survey?

• Local Technical Assistance Program (LTAP), Department of Civil and Environmental Engineering (CEE) College, Utah State University • http://www.utahltap.org• LTAP serves local government agencies, UDOT, FHWA, and the

transportation industry• LTAP has conducted street Surveys for over 70 Utah cities• Training, certification and technical assistance

LTAP Engagement with Providence City

• Streets survey of every block in Providence; 40 plus miles, over 300 city streets• Survey conducted in July, 2017• Physical survey of every Providence street Assign a classification to

each street; residential, major and minor collector, minor arterial• Measure street widths and lengths• Grade assigned to each block• RSL (Remaining Service Life) of each block estimated

LTAP Engagement with Providence City

• Degradation/distress/deterioration identification determined for each block• Analysis of root causes of deterioration and a needs assessment• Recommend maintenance and preservation treatments• Cost estimates and proposed treatment plan for the next 5 years• Input data from survey in to existing City Pavement Management

System• Report issued October, 2017

Cost to the City? $3900

Example of Inventory of Streets Survey Detail

Street Name From To Classification Width (Ft)

Length (Ft) RSL Area (Sq

Ft)300 SOUTH 200 WEST 100 WEST Major Collector 24 705 10 16,920

500 SOUTH 100 WEST 200 WEST Minor Collector 24 691 6 16,584

300 EAST 875 SOUTH 1000 SOUTH Major Collector 24 815 20 19,560

CANYON RD 300 EAST 400 EAST Minor Collector 34 640 10 21,760

CANYON RD SEGO LILY LN GRANDVIEW DR Minor Collector 34 912 12 31,007

GRANDVIEW DR GRANDVIEW CIR FORGOTTEN LN Residential 34 500 14 17,000

EDGEWOOD CIR EDGEWOOD DR DEAD END Residential 34 178 6 6,052

Key Report Points

• The appearance of the road is NOT an indication of the Remaining Service Life (RSL) of a road.• A road may be rough on the surface, have bumps and cracks, but this

does not necessarily mean that the road is in poor condition.• Improving the appearance of the road does not necessarily add to the

life of the road.• The RSL is based on the structural integrity of the road.

Expected life of new asphalt pavement?

• Twenty years – without preventative treatments• Timing of treatment is critical• One-third of pavement life deteriorates in 8 years; after 12

years two-thirds of service life is gone• After 15 years, with 5 years life remaining, a street is in “poor”

condition

Cost to maintain a pavement with preventative treatment is about one-tenth the cost of complete reconstruction

Pavement Deterioration--Causes

The environment• Sunshine (ultraviolet rays)• Oxidation

• Water penetration• Hydraulic action

• Temperature and moisture• Expansion and contraction

(freeze / thaw)

Pavement Preservation

Preserve vs. Reconstruct (worst first?)• Years of pavement condition data show it is more

economical to preserve roads than to delay repairs and reconstruct roads.• Studies also show as traffic levels increases, the

costs of delaying repair work increase significantly.• Repairing the worst roads first is a very expensive

way to operate a road system.

Cost Comparison

Reconstruction• $37,500 to repave a

500 ft length of road (34 ft wide)

Preventative Maintenance• $3,700 to chip seal a

500 ft length of road (34 ft wide)

Worst First

History of Pavement Management

Historically only two criteria existed when deciding which roads received maintenance or rehabilitation.

Politics

Keep Good Roads Good

Do These First (RSL 12) Do These Last (RSL 0)

How Many Providence Streets Graded to have ZERO Remaining Service Life?

“Zero percent of the paved street network in Providence is considered to be in a FAILED condition.”

“Four percent are considered to be in poor condition.”

Condition Rating of Providence Street Network

FAILED POOR FAIR GOOD VERY GOOD EXCELLENT

Remaining Life 0 4 to 6 7 to 9 12-Oct 13 - 15 19 or more

% of Streets 0.0% 4.1% 14.3% 39.6% 28.7% 13.3%

Comparison of Street Condition RatingsCity Year 0 1 to 3 4 to 6 7 to 9 10 to 12 13 to 15 16 to 18 19 or

moreAverage

RSL

Providence 2017 0.0% 0.0% 4.1% 14.33% 39.6% 28.7% 0.0% 13.3% 12.3

Kaysville 2016 0.2% 1.5% 26.2% 19.1% 36.9% 10.0% 0.0% 6.1% 9.6

Woods Cross 2015 3.4% 0.6% 27.5% 24.4% 5.5% 4.4% 18.3% 16.0% 10.9

Layton 2007 0.2% 3.4% 21.1% 46.7% 8.1% 11.3% 0.0% 9.2% 9.2

West Valley 2016 0.4% 0.6% 32.8% 23.8% 29.5% 3.1% 8.0% 1.8% 8.9

Brigham City 2010 0.1% 0.4% 12.0% 28.7% 14.8% 3.1% 30.3% 10.5% 12.1

Heber City 2016 0.2% 0.4% 5.2% 7.9% 47.0% 9.8% 21.5% 8.1% 12.7

Provo 2014 0.6% 2.2% 13.3% 19.0% 37.7% 7.3% 12.4% 7.6% 11.0

North Salt Lake 2007 2.2% 5.8% 20.8% 13.7% 43.9% 4.9% 8.3% 1.1% 9.7

Tooele 2015 1.3% 0.2% 14.4% 14.6% 35.0% 4.3% 18.7% 11.6% 11.7

Recommended Treatments

Routine Maintenance -Crack sealing, fog sealing, patching, dig-outs

Preventative Maintenance -Sand seals, fog seals, chip seals, scrub seals, cape seals, slurry seals, microsurfacing

Rehabilitation -Thin hot mix asphalt overlays, hot surface recycling, bonded wearing, rotomilling, leveling

Reconstruction -Replacing everything including pavement structure (road base)

The cost goes up dramatically with each level of service

Cost of Pavement Treatments and Added Years of Life

Treatment Type Maint. Category Cost 0 1-3 4-6 7-9 10-12 13-15 16-18 19-21

Crack Seal Routine $0.45 0 0 0 0 1 2 3 2Cold Patch Routine $0.45 0 0 0 0 0 0 0 0Digout and Hot Patch Routine $0.68 0 0 0 0 0 0 0 0High Perf. Cold Patch Routine $0.90 0 0 0 0 0 0 0 0Fog Coat Routine $0.68 0 0 0 1 1 2 2 2

High Mineral Asphalt Emulsion Preventative $1.80 0 0 0 1 2 3 5 5Sand Seal Preventative $0.98 0 0 0 1 2 2 2 2Scrub Seal Preventative $1.50 0 1 3 5 5 5 5 5Single Chip Seal Preventative $1.95 0 1 3 5 5 5 5 5Slurry Seal Preventative $2.63 0 1 3 5 5 5 5 5Microsurfacing Preventative $3.60 0 2 3 5 7 7 7 7

Plant Mix Seal Rehabilitation $8.40 0 3 4 5 7 7 7 7Cold In-place Recycling (2 in with chip seal) Rehabilitation $7.50 0 3 4 5 6 7 7 7Thin Hot Mix Overlay (<2 in) Rehabilitation $10.13 0 4 6 7 7 7 7 7HMA (leveling) & Overlay (<2 in.) Rehabilitation $11.25 0 4 6 8 8 8 8 8Hot Surface Recycling Rehabilitation $7.50 0 3 5 7 8 8 8 8Rotomill & Overlay (<2 in) Rehabilitation $12.60 0 4 7 8 8 8 8 8

Cold In-place Recycling (2/2 in.) Reconstruction $15.45 15 15 15 15 15 15 15 15Thick Overlay (3 in.) Reconstruction $15.00 12 12 12 12 12 12 12 12Rotomill & Thick Overlay (3 in.) Reconstruction $16.50 12 12 12 12 12 12 12 12Base Repair\Pavement Replacement Reconstruction $18.00 16 16 16 16 16 16 16 16Cold Recycling & Overlay (3/3 in.) Reconstruction $16.73 14 14 14 14 14 14 14 14Full Depth Reclamation& Overlay (3/3 in.) Reconstruction $19.88 20 20 20 20 20 20 20 20Base/Pavement Replacement (3/3/6 in.) Reconstruction $28.50 20 20 20 20 20 20 20 20

*Fit the current RSL into a category along the top row and then move downward to the applied treatment to find the additional RSL that will be achieved from the selected treatment.(2/2 in.) Means 2" overlay with 2" recycle (3/3/6) Means 3" HMA over 3" Road Base over 6" Base

Long Term Streets PlanMaintenance, Repair, Replacement

• Effective pavement preservation programs• Let roads in poor condition reach zero RSL before

replacement• Higher functionality roads replaced first• Roads with pipeline replacement planned given

priority

How Much is Our Road System Worth ?

• Typically, suburban roads are worth $3 million per mile•With 40 miles of road, the capital value is $120 million•City roads in Providence are worth more than all other

City assets•Are we running this like a $120 million business?

City FinancesThe City has lots of money I heard

Much of the City’s funds are in restricted accounts as required by law.• Water, Sewer and Stormwater (enterprise) funds, $7.4 million• Enterprise funds charge for the use of infrastructure

(pipelines) and set money aside over time to fund eventual replacement; these are called ”reserves”

• Unlike enterprise funds, reserves are not set aside for streets

“B & C fuel tax funds have increased very little in the same

time frame”

“You can resurface less than half of the roads today than in 2003 with the same money.”

– LTAP Report

City FinancesGeneral Fund – All Other City Operations

The General Fund has $3.2 million• City street operations are accounted for in the general fund

as are all other city functions• Some general fund monies are also restricted:• What is left for streets?

The City doesn’t have any money; its taxpayers’ money.

Streets Pavement Management SystemHow do we keep up? Where does the money come from?

Recommended annual spending on maintenance, repair - $400,0002018 Gas Tax revenue anticipated - $290,000