SLIDE 1 www.hertsdirect.org www.hertsdirect.org
Winter Service
Steve Johnson
Business Manager Highways Contracts and Network Management Environment Department - Highways
Winter Operations Lead Officer Derek Twigg. Assistant Network Manager Network Strategy & Compliance t:0300 1234047 Comnet / Internal: 58113 Derek.twigg@hertfordshire.gov.uk
APPENDIX C Hertsmere Highways Liaison Meeting 21/10/15
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Introduction
– Why we do it – What we do
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Why we do it - Statutory Basis
- There is a duty upon a Local
Authority to maintain highways maintainable at public expense which falls under section 41(1) of the Highways Act 1980
remove ‘hazard’
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Statutory Basis
- a) The authority who are for the time being the highway
authority for a highway maintainable at the public expense are under a duty, subject to subsections (2) and (3) below, to maintain the highway.
- b) (1) In particular, a highway authority are under a duty
to ensure, so far as is reasonably practicable, that safe passage along a highway is not endangered by snow or ice.
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HCC Policy
Maintained Highways
Service
WSOP
from NWSRG
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HCC Policy
- To adopt Well Maintained Highways CoP
– It’s what we are measured against.
- Winter Service Operational Plan
- Says what we do, how we do it, sets
priorities
- As per CoP it is member agreed and
published.
- Tested for reasonableness in court
- Praised for being robust
- Recognised nationally as a good plan
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HCC Approach
- October to April
- Low Risk
October & April
November & March
December, January & February
- Pre-treatment found to be better than post
treatment
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Winter Service Method
Weather Stations
Forecaster service
(HCC decision makers)
every outing
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Decision making process
Precautionary Treatment Decision Matrix Road Surface Temperature Precipitation Predicted Road Conditions Wet Wet Patches Dry May fall below 1°C No rain No hoar frost No fog Salt before frost Salt before frost No action likely monitor weather Expected to fall below 1°C No rain No hoar frost No fog Expected hoar frost Expected fog Salt before frost (see note b) Expected rain BEFORE freezing Salt after rain stops Expected rain DURING freezing Salt before frost, as required during rain and after rain stops Possible rain Possible hoar frost Possible fog Salt before frost Monitor weather conditions Expected snow Salt before snow fall The decision to undertake precautionary treatments should be, if appropriate, adjusted to take account of residual salt. All decisions should be evidence based, recorded and require continuous monitoring and review. Decision on treatment timing should account for traffic and road surface wetness at time of treatment and after, as well as forecast conditions.
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Salt usage
- Hold 12000 tonnes at capacity
- Use :@ 300 tonnes per run.
– A little goes a long way.
8-15g per sq metre
- From traditional salt to Safecote savings
– Reduction of 2000 tonnes.
- Potential saved outings using Safecote
– Estimated Reduction of 6 outings.
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Route Coverage
- Current Primary route selection criteria
– A & B roads – MAJOR bus routes – Critical sites – One road to each village – Roads serving industrial areas & shopping centres – Stevenage Urban cycleways (where accessible) – 2200km of Priority routes = 42% of network – Post salting
- Secondary Routes
- High priority footways
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Gritting Routes
http://extra.hertsdirect.org/highways http://www.hertsdirect.org/services/transtreets/highways/hhonlinese rvices/saltingroutes/ /
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Lessons Learnt from severe winters
- Salt Usage ( Spread rates reduced)
- Storage
- Stock holding
- Bagged Salt
- Mutual aid
- Self Help Schemes
- Focus on decision making
- Have a plan available of a minimum
Reduced network Britain in snow, 3rd December 2010
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+ occasional imports
2010 Production vs Consumption
National Salt Stocks (currently 335,000 tonnes) Salt Union (5,500 tonnes per day) Cleveland Potash (3,200 tonnes per day) Salt consumption Blanket snow across whole UK = 194,000 tonnes in 24 hours 1 UK-wide precautionary treatment = 32,400t (based on 20g/m2)
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Additional support
- 1034 Salt bins
- Parish/Borough bagged salt scheme.
– 180+ Resident groups. – 6000 25 kg bags Delivered – @ 50 schools already requested “self help”
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Ringway resources
– Some demountable – Cycle way gritter – Snow ploughs
- 160 Staff available
- 4 depots
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Useful links
- http://www.hertsdirect.org/services/transtreets/hi
ghways/hhonlineservices/saltingroutes
- http://www.hertsdirect.org/services/transtreets/hi
ghways/hhonlineservices/saltingroutes/selfhelps altbag
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Questions
Follow us on Twitter at @Herts_Highways ,#Grittertwitter
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Proposed Date of Next meeting
9th March 2016
