MALLARD AVE
Carrying MALLARD AVE over DRAINAGE DITCH
100203102, Worth, Iowa
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
MALLARD AVE in Worth, Iowa sits above 75% of rated Iowa bridges on inventory load rating (37 t), while its 1973 build year is earlier than 35% of Worth's recorded-year cohort (116 bridges).
MALLARD AVE in Worth, Iowa is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1973, it carries 3 rated components 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 IA:000000000356470
INTERSTATE-ERA · CONCRETE · SINGLE-SPAN · SUB-LED · LOCAL-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- SINGLE-SPAN Single span
- SUB-LED Substructure-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard 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: MALLARD AVE
The MALLARD AVE bridge in Worth, Iowa carries MALLARD AVE over DRAINAGE DITCH. It was built in 1973, making it 53 years old today. It was last reconstructed in 2013, extending its service life. The structure is built primarily of concrete and spans 1 section, stretching 9.4 meters (31 feet) end to end. Daily traffic averages 216 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 9/9, superstructure at 9/9, substructure at 4/9. 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 MALLARD AVE compares
Age against the county: built in 1973, earlier than 41 of Worth's 116 bridges with a recorded construction year (35%), against a county median build year of 1970. This is one of the newer structures in its county.
Live comparison across Iowa bridges with a recorded inventory load rating (23,718 of 23,719 rated).
MALLARD AVE vs every rated Iowa bridge
Inventory load rating (metric tons), FHWA NBI, this state
37 Top 25% higher than 75% of 23,718 bridges
rated Iowa 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.
Worth inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 116 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
- 1973
- Last Reconstructed
- 2013
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 9.4 m (31 ft)
- Deck Width
- 9.4 m (31 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 216 vehicles/day
- Structure Number
- 000000000356470
Condition Analysis
- • The deck (driving surface) rates good at 9/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) rates good at 9/9, with no significant deterioration on file.
- • At 4/9, 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
MALLARD AVE 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 MALLARD AVE against other structures in Worth and across Iowa. Iowa 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 MALLARD AVE?
MALLARD AVE in Worth, Iowa has a deck rating of 9/9, superstructure rating of 9/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is MALLARD AVE inspected?
MALLARD AVE'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 216 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MALLARD AVE 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 MALLARD AVE?
MALLARD AVE has an NBI inventory load rating of 36.6 metric tons.
Who is responsible for maintaining MALLARD AVE?
MALLARD AVE is owned and maintained by County Highway Agency.
How old is MALLARD AVE and does age affect safety?
MALLARD AVE was built in 1973, making it 53 years old and last reconstructed in 2013.
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.