Bridge Inventory Form || NHAI || MoRT&H

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 As Per IRC SP 35 and IRC SP 18:

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