Black Hawk County, IA
411 public highway bridges
Black Hawk County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Black Hawk County, Iowa contains 411 public highway bridges. Roughly 46% are rated “Good,” 28.7% “Fair,” and 5.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (411)
BRYAN RD
PoorOver: TRIB TO CEDAR RIVER
87-11-18-01-10, Black Hawk, IA
LINCOLN RD
PoorOver: TRIB TO BLACK HAWK CREEK
87-14-03-02-10, Black Hawk, IA
OXLEY RD
PoorOver: INDIAN CREEK
88-11-09-02-10, Black Hawk, IA
E DUNKERTON RD
PoorOver: WAPSIPINICON RIVER
90-11-35-03, Black Hawk, IA
ZANETA RD
PoorOver: BLACK HAWK CREEK
88-14-33-03, Black Hawk, IA
E EAGLE RD
PoorOver: MILLER CREEK
87-13-24-01-10, Black Hawk, IA
MARQUIS RD
PoorOver: SHELL ROCK RIV OVERFLOW
90-14-04-07-10, Black Hawk, IA
WINSLOW RD
PoorOver: TRIB W FORK CEDAR RIVER
90-14-08-03-10, Black Hawk, IA
W MT VERNON RD
PoorOver: TRIB TO CEDAR RIVER
90-13-28-01-20, Black Hawk, IA
ANSBOROUGH AVE
PoorOver: TRIB TO MILLER CREEK
87-13-28-02-10, Black Hawk, IA
HESS RD
PoorOver: TRIB TO MILLER CREEK
87-13-12-02-20, Black Hawk, IA
Read our methodology - how this data is sourced, computed, and verified.
Related
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.