FOI Request - Bridge Maintenance

Request 101001298323

I am asking, under the Freedom of Information Act, the following set of questions:

Defining a “road bridge” as a structure with a span of 1.5m or more providing public highway passage for motor vehicles over an obstacle such as a watercourse, railway, road or valley, please provide the following information for all road bridges for which you own as highway authority, including those which are jointly owned with another authority, but for which you are the lead authority:

1.       How many road bridges are you responsible for maintaining?
2.       For each of the last three financial years (2015/16, 2014/15 and 2013/14) how many Principal Inspections have taken place
3.       For each of the last three financial years (2015/16, 2014/15 and 2013/14) how many General Inspections have taken place?
4.       For each of the last three financial years (2015/16, 2014/15 and 2013/14) how many Structural reviews and/or BD21 assessments have been conducted?
5.       How many sub-standard (in terms of capacity) and/or weight restricted bridges do you have?
6.       Of these, how many do you intend to return to full load carrying capacity in the next 5 years?
7.       How many bridges would you return to full load carrying capacity if you had no resource restrictions?
8.       How many of your bridges require post tensioned special inspections (PSTIs)? How many of those have had PSTIs within the last 18 years?
9.       What is the current Depreciation (i.e. difference between your GRC and DRC as declared for your WGA return for 2015/16)?
10.   Have you calculated your back log (or workbank) for bridges? What is the calculated value of your backlog of road bridges, or your best estimate if a calculated value is not available?
11.   What is the annual cost of maintaining your bridge stock at its current level (standstill budget)?
12.   Given that the DfT settlement for Highways Maintenance has an indicative allocation for bridges, what proportion of that settlement does your authority allocate to the structural maintenance of bridges?
13.   In your opinion, what is the biggest challenge for local highway authority bridge engineers over the next 10 years?

Response 13-09-2016

QUESTION   2013/14 2014/15 2015/6
1 379  
2   9 15 17
3   191 188 191
4   0 0 1
5 8  
6 1  
7 8  
8 (i) 1  
8 (ii) 1  
9 £794,585  
10 £9,566,081  
11 £300,000  
12 0.12% Roads Scotland not DFT
13 Trying to predict the rate of deterioration of the bridge stock and prioritising maintenance within the allocated budget.  


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