1. Bridge management systems
CDV - Transport Research Centre (Czech Republic)
Division of Infrastructure and Environment
Dr. Josef Stryk

2. Content Introduction BMS basic structure BMS in European countries
Basic BMS modules
Previous projects (BRIME, NCHRP r.580)
BMS in the Czech Republic
Conclusions

3. Introduction Project ARCHES:
Assessment and Rehabilitation of Central European Highway Structures
WP2:
Structural Assessment and Monitoring (TUC, Spain, J. R. Casas)
Task 2.4:
Systematic decision making processes associated with maintenance and reconstruction of bridges
(CDV, Czech Republic, J. Stryk)
Deliverable 9: August 2009
Guidelines on systematic decision making …
BMS in NMS

4. Bridge management system
commercial / own system
bridge-level / network-level
- condition of bridges, structure safety (serviceability)
information on costs & technologies
decision on maintenance and repair
prediction
prioritization
questionnaire
- national reports

5. BMS in European countries
Country
Year of BMS starting
Prioritization in BMS
Number of bridges managed by BMS
Used system/software
Bulgaria*
from 2004/2005 No
1312
Scan print-Freissinet
Croatia
developed now
Yes
800 on motorways
Oracle 10.G
Czech republic*
2002
18740
IIS database + MS SQL Server
England
2001
8600
Oracle
Estonia*
922
Pontis
France*
1999
Not yet
9000
own system
Germany
2000/2001
38000
SIB-Bauwerke;
BMS-Optimisation-tools
Hungary
1996
6000
Italy*
1986
3626
Oracle, SQL server
Latvia
1775
LatBrutus
Serbia
1985
3500
BPM
Slovakia
1998
7664
own system - Microsoft Access
Slovenia
1992
2300
own system, UNIX

6. Basic BMS modules administration module inventory module
users and their level of access privileges for individual records
inventory module
description, bearing capacity, serviceability, etc.
inspection module
description of defects, suggestions for required measures (immediate or long-term), decision on changing the structure condition or bearing capacity
maintenance module
maintenance requests, degree of urgency, request costing, maintenance records
financial module
ordinary maintenance (e.g. 5 years) versus repair or reconstruction (e.g. 25 years), determination of different strategies, optimization
bridge card
catalogue of defects
supplementary diagnostic tests?
work codebook & cost catalogue
bridge priority list

7. Degradation module for the whole bridge / its elements
started from the time of construction
based on inspections, experience and prediction
- creation of bridge categories (e.g. A, B, C, ..)
- determination of residual lifespan
structure condition
time /years
time /years
good quality, regularly maintained
poor quality, minimal or no maintenance
Lifespan of a new bridges is assumed about 100 years.

8. Determination of costs
Agency costs
in the maintenance module (known costs for realized repairs)
determined by qualified estimate (repair and reconstruction of bridges, where greater extent of work is assumed)
costs are determined depending upon the type and size of bridge
based on square meters of bridge
Road user costs
from traffic delays
connected to traffic re-road
time costs
vehicle operating costs
accident costs
FWD KUAB
FWD Dynatest

9. Projekt BRIME FP4, FEHRL
Bridge Management of Europe,
D7: Decision on repair/replacement
content:
literature review
existing decision systems
commercial Bridge Management Systems
proposed decision system

10. BRIME decision system, 2000 Global cost function C:
CC construction costs CF failure costs
CI inspection costs CU road user costs
CM maintenance costs CO other costs
CR repair costs VS salvage value of the bridge
Repair/replacement decision is made according to repair index RI of each alternative:

11. NCHRP R580: Multi-objective optimization, 2008
Goal
Performance measures
1. Preservation of Bridge Condition
Condition Ratings (deck, superstructure,
substructure)
(b) Health Index
(c) Sufficient Rating
2. Traffic Safety Enhancement
(a) Geometric Rating/Functional Obsolescence
(b) Inventory Rating or Operating Rating
3. Protection from Extreme Events
(a) Scour Vulnerability Rating
(b) Fatigue/Fracture Criticality Rating
(c) Earthquake Vulnerability Rating
(d) Other Disaster Vulnerability Rating
(Collision, Overload, Human-Made)
4. Agency Cost Minimization
(a) Initial Cost
(b) Life-Cycle Agency Cost
5. User Cost Minimization
(a) Life-Cycle User Cost
1) do-nothing, 2) maintenance, repair, rehabilitation and improvement (MRR&I), 3) total replacement.

12. BMS in the Czech Republic
Basic information are public through internet:
inventory data
description of substructure & superstructure
condition & load capacity
schemes
inspections
maintenance
documents
net present value (NPV)
financial module
location (map)

13. BMS in the Czech Republic
catalogue of defects - 95
work codebook & cost catalogue

14. Conclusions
BMS is a basic tool for optimal planning of maintenance and repair/replacement of bridges
Most countries prefer usage of their own developed BMS or at least adjusted commercial BMS
BMS is useful even in case of limited resources for maintenance and repair
For optimal planning you need enough correct data
Each system is as good as people who work with it
User costs – their importance is based of traffic intensity and society standards and requirements
PMS – Pavement Management System

15. Thank you for your attention.
CDV - Transport Research Centre (Czech Republic)
Division of Infrastructure and Environment
Dr. Josef Stryk
PMS – Pavement Management System