This presentation from the 12th National Conference on Transportation Asset Management summarizes "Results from NCHRP Project 20-118: effective performance management by transportation agencies— benchmarking and comparative measurement." It details the approach and provides public link to the tool used. 

Infrastructure Assets: Bridge, Highway Assets, Pavement
Resource Types: Presentation
Capabilities: Data & Information Systems, Tools & Technology
Management Processes: Performance Reporting & Communication, Target Setting