County Road 66
Carrying County Road 66 over Duck Creek
0.9 Mi E of Co Rd 81, Logan, Colorado
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
County Road 66 in Logan, Colorado sits above 92% of rated Colorado bridges on inventory load rating (61 t), while its 1993 build year is earlier than 38% of Logan's recorded-year cohort (182 bridges).
County Road 66 in Logan, Colorado is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1993, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor 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 CO:LOG66-81.9-200A
LATE-CENTURY · STEEL · MULTI-SPAN · CULVERT-LED · TRACE-ADT · HEAVY-LOAD · CAT-POOR
- LATE-CENTURY 1980–1999
- STEEL Steel
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- TRACE-ADT Trace ADT
- HEAVY-LOAD Heavy load
- CAT-POOR Poor
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: County Road 66
The County Road 66 bridge in Logan, Colorado carries County Road 66 over Duck Creek. It was built in 1993, making it 33 years old today. The structure is built primarily of steel and spans 2 sections, stretching 6.1 meters (20 feet) end to end. Daily traffic averages 44 vehicles, placing it in the lower-traffic tier of Colorado bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How County Road 66 compares
Age against the county: built in 1993, earlier than 70 of Logan's 182 bridges with a recorded construction year (38%), against a county median build year of 1990. This is one of the newer structures in its county.
Live comparison across Colorado bridges with a recorded inventory load rating (8,962 of 8,965 rated).
County Road 66 vs every rated Colorado bridge
Inventory load rating (metric tons), FHWA NBI, this state
61 Top 8% higher than 92% of 8,962 bridges
rated Colorado 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.
Logan inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 182 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
- 1993
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 6.1 m (20 ft)
- Deck Width
- 12.3 m (40 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 44 vehicles/day
- Structure Number
- LOG66-81.9-200A
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
County Road 66 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare County Road 66 against other structures in Logan and across Colorado. Colorado 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 County Road 66?
County Road 66 in Logan, Colorado on the FHWA's 0–9 scale.
How often is County Road 66 inspected?
County Road 66'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 44 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. County Road 66 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for County Road 66?
County Road 66 has an NBI inventory load rating of 60.7 metric tons.
Who is responsible for maintaining County Road 66?
County Road 66 is owned and maintained by County Highway Agency.
How old is County Road 66 and does age affect safety?
County Road 66 was built in 1993, making it 33 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.