ABC’s Construction Backlog Indicator is the only economic indicator that reflects the amount of work that will be performed by commercial and industrial construction contractors in the months ahead. The Construction Confidence Index is a diffusion index that signals construction contractors’ expectations for sales, profit margins and staffing levels. View the methodology for both indicators. 


Associated Builders and Contractors (ABC) today reports that its Construction Backlog Indicator (CBI) for the fourth quarter of 2010 averaged 7.1 months, up from 7 months in the third quarter of last year – an improvement of 1.4 percent. In addition, CBI is up 21.3 percent from a low of 5.8 months in the fourth quarter of 2009. CBI is a forward-looking indicator that measures the amount of construction work under contract to be completed in the future.

"Today’s backlog numbers are consistent with the pace of recovery in overall nonresidential construction activity,” said ABC Chief Economist Anirban Basu. “However, what we are seeing from the fourth quarter 2010 data is a recovery in the construction industry that is more gradual than the rate of expansion in financial markets and the broader economy.

"CBI continues to edge toward levels observed last spring. At that time, federally financed projects were adding to construction backlog as they moved from the planning stage to the bid selection stage,” said Basu. “However, the fourth quarter numbers indicate that federal stimulus is no longer adding to construction backlog in a meaningful way and that the recovery in many privately financed segments remains agonizingly slow. Still, CBI remains well above its historic low point of 5.5 months recorded in January 2010.

"During the fourth quarter of last year, sources of economic improvement and growth expanded to include additional retail segments, rapid export growth and an uptick in business investment,” Basu said. “At the same time, improvement in commercial and institutional construction became more apparent as backlog in these two sectors rose to the highest level in the history of the series,” Basu said.

"The improvement in commercial construction-related backlog is precisely what ABC forecasted in its last report, and we anticipate that this segment will continue to show signs of life and growth in the months ahead,” said Basu.

Regional Highlights

  • During the past year, construction backlog expanded in all major regions of the country except the West, which posted the smallest average backlog at 5.8 months in the fourth quarter of 2010.
  • The South, which includes states such as Louisiana, Oklahoma and Texas, continues to support the largest average construction backlog. In the fourth quarter of 2010, regional backlog averaged 7.8 months, and it is expanding briskly.
  • Construction backlog is improving in the Middle States, which include Indiana, Michigan and Ohio. Average backlog has returned to levels above 6 months.

"With investment in power generation and natural resource exploration increasingly taking center stage in the nation’s economic expansion, regions that are more natural resource intensive are likely to experience increases in construction backlog, and eventually in construction spending. This appears to be precisely what is occurring in the South and Middle States,” said Basu. “In contrast, much of the western United States is associated with unemployment and vacancy rates above national averages. Ongoing and serious fiscal issues in a handful of key states also are suppressing nonresidential construction recovery in much of the West, explaining at least in part the sluggish nature of the construction recovery there to date.”

CBI Map of Regions: Fourth Quarter 2009 v. Fourth Quarter 2010

Industry Highlights


  • Between December 2009 and December 2010, construction backlog increased in all industry categories with the exception of infrastructure – a complete reversal. For much of the history of the CBI, infrastructure-related backlog has been the only source of growth.
  • During last year’s final quarter, construction backlog increased in the commercial and institutional sector and is now higher than any time since late 2008.
  • Construction backlog in the heavy industrial segment has scarcely begun to recover and remains low by historic standards at an average of 6.3 months in the fourth quarter of 2010.

"The fourth quarter 2010 data shows that the economy is increasingly shifting toward private sector momentum and away from public sector dependence. Though the recovery remains well short of two years in duration, its positive impact on construction is becoming increasingly apparent,” Basu said. “Unfortunately, the outlook is not as bright for contractors that primarily work in the infrastructure segment. As federal stimulus-financed projects wind toward their inevitable conclusion, the expectation is that construction backlog in this category is likely to fall, bolstered by ongoing issues in state and local government finances, which hamstring capital spending."

Highlights by Company Size



  • Firms of all size categories observed expanding construction backlog during last year’s fourth quarter compared to the third quarter.
  • Those firms with revenue between $30 million and $50 million per year continue to report the smallest average construction backlog at 5.6 months, but are showing signs of improvement.
  • Firms with annual revenue between $50 million and $100 million collectively reported an average construction backlog approaching 10 months, a significant improvement over the 8.5 month backlog recorded at the end of last year’s third quarter.

"As recovery in the broader economy and nonresidential construction sector proceed, smaller firms are likely to begin to experience larger construction backlogs. This is the firm size category that stands to benefit the most from the shift toward private sector-led expansion,” said Basu. “In comparison, firms with annual revenues in excess of $100 million a year are diversified to the point that their construction backlog will improve regardless of either public or private sector expansion."

To view the previous CBI charts click here.



Associated Builders and Contractors (ABC) is a national association with 75 chapters representing more than 23,000 merit shop construction and construction-related firms with nearly two million employees. Visit us at






Note: The reference months for the Construction Backlog Indicator and Construction Confidence Index data series were revised on May 12, 2020. All previously reported quarters and months shifted forward by one period to better reflect the timing of when the surveys were conducted. 

ABC construction economic releases are published according to this schedule in 2023

For media inquiries, please contact Erika Walter, ABC director of media relations, at [email protected].

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