Bridge Inventory Form || NHAI || MoRT&H

Bimal Barman
personBimal Barman
August 23, 2021
1

Bridge Inventory Form || Bridge Inventory Manual

Before inspecting a bridge you have to fill the Bridge Inventory Form or Bridge Inventory Manual. The main purpose of the Bridge Inventory is to collect and store the basic data and information on the present condition bridge structures. These Bridge Inventory data are most useful during bridge construction, bridge widening, bridge repairing, and rehabilitation.

The following data are required to fill the Bridge Inventory Form or Bridge Inventory Manual-

(A) IDENTIFICATION
  1. Link No.
  2. State
  3. N.H. No.
  4. Section
  5. Location
  6. Structure No.
  7. NH Chainage (km)
  8. Latitude
  9. Longitude
  10. Features Intersected
  11. Facility Carried by Structure
  12. Popular/Official Name
  13. Highway Circle/Division
  14. Administrative District
  15. Nearest City/Town
  16. Custodian
  17. Year of Construction
  18. High Level or Submersible
  19. Overall Length of Bridge
  20. Clear carriageway width over the bridge
  21. Overall deck width over the bridge
  22. Roadway width for approaches
  23. No. of Traffic Lances
  24. Load Rating as per IRC
  25. Average Daily Traffic (ADIT)
  26. Year of ADT
  27. Detour Length
  28. Documentation
  29. Month/Year of inventory
(B) STRUCTURE DATA

  1. Design Discharge in Cumecs
  2. Design HFL & LWL
  3. Design Scour Level at Pier (lowest)
  4. Design Scour Level at Abutment (lowest) 
  5. Founding Strata 
  6. Waterbody lowest bed level
  7. Whether the Bridge is in Grade 
  8. Road formation level
  9. Ground level (for approach portion)
  10. Deck soffit level or lowest level of superstructure
  11. Clear carriageway width (m)
  12. Overall Deck Width (m)
  13. Roadway width (including shoulder) for approaches (m)
  14. Safety kerb width (m)
  15. Footpath width (m)
  16. Bridge railing type, material and width (m)
  17. Whether Median, if yes its width (m)
  18. Shoulder width (m) and material
  19. Height of Approach Embankment (m)
  20. Average Skew angle
  21. Whether Navigable 
  22. Horizontal Clearance 
  23. Vertical Clearance
  24. High level/ Submersible /Causeway
(B)(1) MAIN SPANS 

  1. Total Number of Spans
  2. Span Arrangement
  3. Superstructure Type and material
  4. Pier Type
  5. Abutment Type
  6. Pier Foundation
  7. Maximum Depth of Pier Foundation
  8. Abutment Foundation Type
  9. Maximum Depth of Abutment Foundation
  10. Type of Bearings
  11. Wearing Coat Type
  12. Expansion Joints Type
  13. Railing/Crash barriers Type
(B)(2) APPROACH SPANS

  1. Total Number of Spans
  2. Span Arrangement
  3. Superstructure Type
  4. Pier Type
  5. Abutment Type
  6. Pier Foundation Type
  7. Depth of Pier Foundation
  8. Abutment Foundation Type
  9. Depth of Abutment Foundation
  10. Type of Bearings
  11. Wearing Coat Type
  12. Expansion Joints Type
  13. Railing Type
B)(3)(GENERAL)

  1. Corrosion Protection Measures
  2. Bank Protection & Type
  3. Floor Protection & Type
  (C)HISTORY 
  1. Suspension Traffic
  2. Erosion of Banks
  3. Scour Around Guide Bunds
  4. Abnormal Scour Level Around Piers
  5. Abnormal Scour Level Around Abutments
  6. Abnormal Flood Level
  7. Distress and Repair in Foundation
  8. Distress and Repair Guide Bunds
  9. Distress and Repair in Substructure including Bearings
  10. Distress and Repair in Substructure 
  11. Any other Observations

This is the view of  Bridge Inventory Form or Bridge Inventory Manual in pdf form 


Bridge Inventory Form

Bridge Inventory Form As Per IRC SP 35 and IRC SP 18:


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