| Response |
1. How many road bridges are you responsible for maintaining? | 317 |
2. For the last financial year 2022/23 (Note: the figures below are for all highway structures) |
(i) how many Principal Inspections have taken place in that year? | 158 |
(ii) how many Principal Inspections did you plan to do in that year? | 193 |
3. For the last financial year 2022/23 (Note: the figures below are for all highway structures) |
(i) how many General Inspections have taken place in that year? | 406 |
(ii) how many General Inspections did you plan to do in that year? | 453 |
4. For the last financial year 2022/23 how many Structural Reviews did you undertake? | 45 |
5. How many substandard bridges do you have (in terms of ability to carry 44t vehicles)? Please exclude bridges that have weight restrictions for environmental reasons. | 15 |
6. Of these substandard bridges, how many do you intend to return or upgrade to full load carrying capacity in the next 5 years? | 6 |
7. How many bridges would you return to full load carrying capacity if you had no resource restrictions? | 15 |
8. (i) How many post-tensioned bridges do you have? | 90 |
(ii) How many of those have had PTSIs within the last 18 years? | 72 |
(iii) Of those that have not had a PTSI, how many require/are due one? | 16 |
(iv) How much funding would you anticipate is required to remove the backlog of PTSIs for those bridges identified in Q8(iii)? | Approx. £3.5m to £5.5m |
9. In monetary terms, what is the current Depreciation (i.e. difference between your GRC and DRC for 2022/23? | The Whole Government Accounts (WGA) figures for 2022/2023 have not been provided to the Department for Transport so this information is not available. |
10. What is the calculated value of your workbank? (Workbank is defined as the total value of condition-based maintenance work that has been identified and can be calculated using SAVI or by other means) | £850-£1050M (not including inflation) |
11. (i) What is the annual revenue works expenditure for maintaining your bridge stock (excluding staff costs)? | TfL does not have a separate core service lump sum for bridge maintenance so are unable to separate out lump sum costs. The total lump sum amount under the current contract for 2022/23 is £34,001,427.84 covering all asset types. Because of the change in contracts over previous years, the data is not comparable.
Condition Inspections Core Services - £69,732.66 Structures General Inspections - £804,956.75 Structures Principal Inspections - £1,718,353.66 Structures Reactive Inspections - £34,988.60 Structures Ordered Maintenance - £1,348,752.43 Structures Interim Measures (Monitoring) - £2,600,091.21 Total: £6,576,875.31 |
(ii) What is the annual capital works expenditure for maintaining your bridges stock? | c. £20m |
(iii) What total budget would you estimate is required to maintain the bridge stock at its current level (standstill budget)? | £120-150m including major projects |
12. For the last financial year 2022/23 |
(i) How many of your bridges required a Stage 1 Scour Assessment? | 119 |
(ii) How many Stage 1 Scour Assessments did you undertake? | 0 |
13. For the last financial year 2022/23 |
(i) How many of your bridges required a Stage 2 Scour Assessment? | 0 |
(ii) How many Stage 2 Scour Assessments did you undertake? | 0 |
14. (i) How many bridges under your management completely collapsed in 2022/23? | 0 |
(ii) How many bridges under your management partially collapsed in 2022/23? | 0 |
(iii) Would you be happy to share the detail with members of the UK Bridges Board? Y/N | Yes |
15. What was your Bridge Stock Condition Index (BSCI) at the end of 2022/23 (or current if easier)? | BSCI Critical – 62.15. BSCI Average – 82.77 |
16. What issues with managing your bridge stock causes you most concern? | Availability of sustainable capital funding for investment to undertake necessary asset renewal and capacity to execute the works. |