BARNARDS MILL ROAD
Carrying BARNARDS MILL ROAD over NIPPERSINK CR
AT HOWE RD INTERSECT, McHenry, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: BARNARDS MILL ROAD
The BARNARDS MILL ROAD bridge in McHenry, Illinois carries BARNARDS MILL ROAD over NIPPERSINK CR. It was built in 1950, making it 76 years old today. It was last reconstructed in 2011, extending its service life. The structure is built primarily of steel continuous and spans 3 sections, stretching 31.1 meters (102 feet) end to end. Daily traffic averages 4,200 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 48.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How BARNARDS MILL ROAD compares
Live comparison across Illinois.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1950
- Last Reconstructed
- 2011
- Material
- Steel Continuous
- Number of Spans
- 3
- Structure Length
- 31.1 m (102 ft)
- Deck Width
- 8.5 m (28 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 4,200 vehicles/day
- Structure Number
- 056303100000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 8/9, the deck (driving surface) is in good shape and shows no significant wear.
- • At 8/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether BARNARDS MILL ROAD is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare BARNARDS MILL ROAD against other structures in McHenry and across Illinois. Illinois bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for BARNARDS MILL ROAD?
BARNARDS MILL ROAD in McHenry, Illinois has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is BARNARDS MILL ROAD inspected?
BARNARDS MILL ROAD's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 4,200 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BARNARDS MILL ROAD is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for BARNARDS MILL ROAD?
BARNARDS MILL ROAD has an NBI inventory load rating of 48.6 metric tons.
Who is responsible for maintaining BARNARDS MILL ROAD?
BARNARDS MILL ROAD is owned and maintained by Town/Township Highway Agency.
How old is BARNARDS MILL ROAD and does age affect safety?
BARNARDS MILL ROAD was built in 1950, making it 76 years old and last reconstructed in 2011.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
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.