EMERSON AIRLINE RD
Carrying EMERSON AIRLINE RD over E. FK. OTTER CREEK
3.5 MI W..GIRARD, Macoupin, Illinois
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
EMERSON AIRLINE RD in Macoupin, Illinois sits above 24% of rated Illinois bridges on inventory load rating (32 t), while its 1939 build year is earlier than 69% of Macoupin's recorded-year cohort (242 bridges).
EMERSON AIRLINE RD in Macoupin, Illinois is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1939, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair 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:059500400000000
PRE-1950 · CONCRETE · MULTI-SPAN · CULVERT-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
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: EMERSON AIRLINE RD
The EMERSON AIRLINE RD bridge in Macoupin, Illinois carries EMERSON AIRLINE RD over E. FK. OTTER CREEK. It was built in 1939, making it 87 years old today. It was last reconstructed in 2014, extending its service life. The structure is built primarily of concrete continuous and spans 2 sections, stretching 8.2 meters (27 feet) end to end. Daily traffic averages 1,150 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 culvert at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How EMERSON AIRLINE RD compares
Age against the county: built in 1939, earlier than 167 of Macoupin's 242 bridges with a recorded construction year (69%), against a county median build year of 1975. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Illinois bridges with a recorded inventory load rating (26,904 of 26,928 rated).
EMERSON AIRLINE RD vs every rated Illinois bridge
Inventory load rating (metric tons), FHWA NBI, this state
32 Top 76% higher than 24% 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.
Macoupin inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 242 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
- 1939
- Last Reconstructed
- 2014
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 8.2 m (27 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 1,150 vehicles/day
- Structure Number
- 059500400000000
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 EMERSON AIRLINE RD 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 EMERSON AIRLINE RD against other structures in Macoupin 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 EMERSON AIRLINE RD?
EMERSON AIRLINE RD in Macoupin, Illinois on the FHWA's 0–9 scale.
How often is EMERSON AIRLINE RD inspected?
EMERSON AIRLINE RD'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 1,150 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. EMERSON AIRLINE RD is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for EMERSON AIRLINE RD?
EMERSON AIRLINE RD has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining EMERSON AIRLINE RD?
EMERSON AIRLINE RD is owned and maintained by County Highway Agency.
How old is EMERSON AIRLINE RD and does age affect safety?
EMERSON AIRLINE RD was built in 1939, making it 87 years old and last reconstructed in 2014.
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.