Happ Road
Carrying Happ Road over Skokie River
0.5 Mi S of Winnetka, Cook, Illinois
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Happ Road in Cook, Illinois sits above 96% of rated Illinois bridges on inventory load rating (56 t), while its 2017 build year is earlier than 4% of Cook's recorded-year cohort (1,721 bridges).
Happ Road in Cook, Illinois is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2017, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 8. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure IL:016305600000000
POST-2000 · CONCRETE · MULTI-SPAN · TIED-CTRL · ARTERIAL-ADT · HEAVY-LOAD · CAT-GOOD
- POST-2000 2000+
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: Happ Road
The Happ Road bridge in Cook, Illinois carries Happ Road over Skokie River. It was built in 2017, making it 9 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 22.9 meters (75 feet) end to end. Daily traffic averages 3,700 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by County 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. All reported major components score above the Poor range.
How Happ Road compares
Age against the county: built in 2017, earlier than 65 of Cook's 1,721 bridges with a recorded construction year (4%), against a county median build year of 1962. This is one of the newer structures in its county.
Live comparison across Illinois bridges with a recorded inventory load rating (26,904 of 26,928 rated).
Happ Road vs every rated Illinois bridge
Inventory load rating (metric tons), FHWA NBI, this state
56 Top 4% higher than 96% of 26,904 bridges
rated Illinois bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Cook inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 1,721 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2017
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 22.9 m (75 ft)
- Deck Width
- 12.9 m (42 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 3,700 vehicles/day
- Structure Number
- 016305600000000
Condition Analysis
- • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether Happ 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 Happ Road against other structures in Cook 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 Happ Road?
Happ Road in Cook, 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 Happ Road inspected?
Happ 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 3,700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Happ 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 Happ Road?
Happ Road has an NBI inventory load rating of 56.4 metric tons.
Who is responsible for maintaining Happ Road?
Happ Road is owned and maintained by County Highway Agency.
How old is Happ Road and does age affect safety?
Happ Road was built in 2017, making it 9 years old.
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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.