Your Roads Conference 2015 Transport for Buckinghamshire What is - PowerPoint PPT Presentation

The Structures Team is responsible for: • 374 Bridges • 132 Culverts • 52 Footbridges (Not Rights of Way) • 27 Pedestrian Subways • 7 Other Structures (Cattle grids, slipway & Marlow Obelisk) • 11 Pump Stations (Subways & Marlow Flood Relief) • 100 Retaining Walls 50

Structures are an Important Asset • Key part of the highway network • Often the forgotten asset - vehicles pass over often without realising they are there. • Sizes vary from 0.9m span up to 72m span. 51

Structures Condition Measurement • Inspected on a 2 yearly cycle • Nationally agreed system – condition scores determined for each structure. • One score – BCI AVE – looks at the overall condition of the structure. • The second score – BCI CRT – looks at the critical element e.g. the beams supporting the road deck 52

Structures Condition • BCI AVE - our structures are classed as being mainly in a good condition. • However, looking at the critical elements (BCI CRT ) the story is different. • 33% of all structures (excluding retaining walls) are classed as having insufficient maintenance funding. • Ranging from V. Poor to Fair condition on the following diagram. 53

Structures Condition 585 Structures 54

The Significance of the 33% • Using the standards set out in the Nationally accepted standard (Management of Highway Structure - Code of Practice) BCICRT Maintenance Funding (Code of Condition Practice) Critical Stock Risk Historical maintenance works under Some structure may 18% Fair funded and not managed in accordance represent a significant risk to with Code of Practice public safety Historical maintenance works Some structure may significantly underfunded and not 13% Poor represent a high risk to public managed in accordance with Code of safety Practice Historical maintenance works grossly Some structure may 2% Very Poor underfunded and not managed in represent a Very high risk to accordance with Code of Practice public safety 55

Expenditure / Backlog 56

Backlog and Risk Management • Current works backlog is valued at £4,670,000 • Based on the last 18mths - 10% are individual BCI CRT defects i.e. £467,000. • Current approach - manage the associated risk by: – detailed assessments and investigations – increasing inspections/monitoring – targeting expenditure on the greatest risks. – Introduction of temporary restriction 57

Risk Management • Abbey Way Elevated Road – Closure of Lane 1 to protect parapet 58

Potential Risks Due to Inadequate Maintenance • Risk of injury or death to public. • Increased ongoing maintenance costs. • Increased risk of flooding. • Delays to traffic due to repairs. • Inconvenience to public due to diversions. • Potential introduction of weight limits. • Restriction to single lane and possibly traffic signals. • In extreme cases collapse of structure causing significant disruption. • Increased monitoring/inspection costs. • Disruption to utilities on bridges. 59

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Intelligent Transport Systems (ITS) Keeping things moving Tony Blackmore ITS Specialist Transport for Buckinghamshire

What we do We monitor the use of the network to identify congestion, incidents or events In some cases we can even adjust timings of traffic lights We provide information to travelling public 62

Our current asset Traffic signals 63 Junctions 9 Bridge shuttles 8 Part time signals 120 controlled crossings 63

Our current asset 49 Traffic monitoring Other ITS assets cameras CCTV 13 electronic message signs 40 Journey time monitoring cameras 6 Bollard Access 21 Car park systems information signs Rising Bollards 64

Our current asset Other ITS assets 80 Electronic 53 Electronic bus timetable bus stop units displays 2 Bus station 3 Information systems kiosks (35 displays) 65

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Why is it there • Safety • To rebalance from a vehicle dominated flow • Control software can improve capacity by up to 20% 68

What we spend 69

What we spend Change to LED • All lamps changed from Halogen to LED from 2008 - 10 • 85% reduction in power consumption • At least 16 times longer service life Remote monitoring & control • Ability to check for faults from central control room • Increasing number of problems can be resolved immediately without having to send engineer to site 70

What we spend Currently 200 sets of traffic signals Expected service life 15 – 20 years Current end of life replacements 1 – 2 per year Currently 210 other ITS assets Expected service life 10 – 15 years Current end of life replacements Zero 71

Effect of spending less Aging asset Inefficient systems lead to congestion 72

Effect of spending less Increased isolation for an aging population Lack of access to those with mobility, sensory & cognitive impairment 73

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Highways Drainage Managing surface water John Gibbons Operations Manager Transport for Buckinghamshire

Duties and Responsibilities • Transport for Buckinghamshire has a responsibility to maintain highway drainage assets and presently carries out cyclical gully cleaning operations annually • There are 75,129 gullies on the adopted highway which are attended to each year • We presently use three(3) gully emptying machines to achieve this cyclical maintenance service 76

Drain clearing (also called gully emptying) • Drain clearing is undertaken to ensure that surface water is removed from the carriageway as quickly as possible and not allowed to collect or penetrate the foundation of the road. In addition it is important that water is not allowed to stand on the carriageway and cause a road safety hazard. • Drainage works such as grip clearance, ditch cleaning, are included in the annual drainage programme. 77

Winter Landscape Maintenance • Once grass cutting is complete, we direct our labour to carry out Winter Landscaping work • This service includes cutting road side grips and cleaning side entry gullies in advance of winter • Grips are opened in order to direct water off the carriageway and where possible to drain directly into adjacent road side ditched 78

High Pressure Jetting • Using a budget from a Capital Maintenance programme we attend to problem sites where the main surface water drainage pipe may prove to be obstructed/blocked. • We use a powerful machine (super sucker) to rod the main carrier to free the pipe(s) of obstruction • Water is forced with pressure using varying size jetting hoses • In addition root cutting is carried out where possible to reduce invasive excavation 79

Capital drainage budget • The capital drainage budget is used when new assets are added to the net work. This work includes • New gully pot installation • Installing a manhole on an exit or new drain carrier pipe • Increasing the diameter of pipework to improve the capacity of existing drainage system 80

Ditch it Programme • Following the extreme flooding over the winter of 2013- 14, the council decided to invest in undertaking ditch maintenance across the County. As a result of this many BCC owned ditches were identified as needing maintenance and therefore a comprehensive programme was put together. • The programme of works started last year, a value of £610K work achieved. A remaining budget of £190k is planned to take place this financial year 81

Bore Holes • We have a Capital Maintenance budget to bore holes in existing soakaways • The benefit is to drill a core to a subsoil strata (where possible) which is more permeable. This may reduce the risk of localised flooding

The Existing Asset Register • We do not have a comprehensive register and data collection is on going. To date we recognise there are – 75,129 gullies – 15,000 Soakaways – 14 Balancing ponds – 1122 km of pipework – 944 km of ditches – 37,900 Inspection chambers 83

Capital Budget for Highway drainage 2015-16 • High Pressure jetting = £ 198,637 • Capital Drainage = £489,518 • Ditch It programme =£190,000 • Borehole = £103,000 • Total budget spend equates to £981,155

Ancillary Items Signing, lining and everything else Dave Stewart Schemes Delivery Manager Transport for Buckinghamshire

What are Ancillary Items? • Signing • Lining • Studding • Safety Fencing • Guardrail • Any other street furniture 87

Ancillary items

Ancillary items

Facts and Figures • 35,000 signs on our network (6,000 illuminated) • 2,425,000m of road markings • 3,000 words/symbols • 410,000 road studs • 52,000m of safety fencing • 25,000m of pedestrian guardrail 90

Ancillary Items – why are they important? • Statute – standards which must be adhered to by law. • Standards – good practice standards, national accepted practices • Safety – protection of travelling public • Amenity – visual impact, quality of life, practicality 91

The boring bits….. CONSPICUITY Clear and legible COMPREHENSIBILITY Ease of understanding CREDIBILITY Prompts action 92

Not so boring……

Signing Colour Design Contrast Placement Reflectivity Lighting Conspicuity and Credibility legibility 94

Signing • Since its first edition in 1964 - major revisions to TSRGD in 1975, 1981, 1994 and 2002 • 276 ‘approved’ traffic signs in 1964, 862 by 2002. Growth in regulation is not sustainable • Review 2008, DfT Policy Paper ‘Signing the Way’, prompting TSRGD revision 2015 • Removes a lot of regulation and gives more decision making power to Local Authorities • De-regulates lighting requirements on signs • Saves £690 per sign, and nationally £5.9m on energy costs alone (TRL) 95

Signing – lighting de-regulation 96

Lining • Good Practice based on DMRB/SFHW • Regular survey of visibility/legibility/retro-reflectivity • Rolling maintenance programme • Avoid ad hoc replacements • Thermoplastic with max 3 x overspray refresh • Encourage innovation 97

Studding • Good Practice based on DMRB/SFHW • Night inspection of retro-reflectivity • 10% max failure on bends • 25% max failure on straights • Avoid ad hoc replacements • Encourage innovation 98

Safety Fencing (VRS) • Critical for safety • Complex design/construction • Stringent standards • Specification changes • Bi-annual tensioning • Structural testing • Implementation of ‘new’ standards 99

Guardrail • Effective in the right place • Design standards • Not a vehicle restraint • De-cluttering 100