Madison CO RD 18-B
Carrying Madison CO RD 18-B over SPANKER
4.41 SO E US 412, Madison, Arkansas
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Madison CO RD 18-B in Madison, Arkansas sits above 2% of rated Arkansas bridges on inventory load rating (6 t), while its 1950 build year is earlier than 85% of Madison's recorded-year cohort (149 bridges).
Madison CO RD 18-B in Madison, Arkansas is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1950, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 3. 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 AR:000000000015028
INTERSTATE-ERA · STEEL · MULTI-SPAN · SUB-LED · LOCAL-ADT · LIGHT-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 2 spans
- SUB-LED Substructure-led
- LOCAL-ADT Local ADT
- LIGHT-LOAD Light 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: Madison CO RD 18-B
The Madison CO RD 18-B bridge in Madison, Arkansas carries Madison CO RD 18-B over SPANKER. It was built in 1950, making it 76 years old today. It was last reconstructed in 1970, extending its service life. The structure is built primarily of steel and spans 2 sections, stretching 12.2 meters (40 feet) end to end. Daily traffic averages 923 vehicles, placing it in the lower-traffic tier of Arkansas bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 5/9, substructure at 3/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How Madison CO RD 18-B compares
Age against the county: built in 1950, earlier than 127 of Madison's 149 bridges with a recorded construction year (85%), against a county median build year of 1978. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Arkansas bridges with a recorded inventory load rating (12,914 of 12,974 rated).
Madison CO RD 18-B vs every rated Arkansas bridge
Inventory load rating (metric tons), FHWA NBI, this state
6 Top 98% higher than 2% of 12,914 bridges
rated Arkansas 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.
Madison inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 149 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
- 1950
- Last Reconstructed
- 1970
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 12.2 m (40 ft)
- Deck Width
- 4.3 m (14 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 923 vehicles/day
- Structure Number
- 000000000015028
Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • At 3/9, the substructure (piers and abutments) is in poor shape, with advanced wear on file for this vintage.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
Madison CO RD 18-B 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 Madison CO RD 18-B against other structures in Madison and across Arkansas. Arkansas 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 Madison CO RD 18-B?
Madison CO RD 18-B in Madison, Arkansas has a deck rating of 6/9, superstructure rating of 5/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.
How often is Madison CO RD 18-B inspected?
Madison CO RD 18-B'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 923 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Madison CO RD 18-B 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 Madison CO RD 18-B?
Madison CO RD 18-B has an NBI inventory load rating of 6.4 metric tons.
Who is responsible for maintaining Madison CO RD 18-B?
Madison CO RD 18-B is owned and maintained by County Highway Agency.
How old is Madison CO RD 18-B and does age affect safety?
Madison CO RD 18-B was built in 1950, making it 76 years old and last reconstructed in 1970.
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.