1ST AVE S
Carrying 1ST AVE S over 21ST ST & RR
089282000, Webster, Iowa
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
1ST AVE S in Webster, Iowa sits above 1% of rated Iowa bridges on inventory load rating (0 t), while its 1968 build year is earlier than 78% of Webster's recorded-year cohort (190 bridges).
1ST AVE S in Webster, Iowa is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1968, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 0. 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:000000000005040
INTERSTATE-ERA · PRESTRESS · LONG-SPAN-RUN · TIED-CTRL · ARTERIAL-ADT · TRACE-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- LONG-SPAN-RUN 17 spans
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial ADT
- TRACE-LOAD Trace 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: 1ST AVE S
The 1ST AVE S bridge in Webster, Iowa carries 1ST AVE S over 21ST ST & RR. It was built in 1968, making it 58 years old today. It was last reconstructed in 1978, extending its service life. The structure is built primarily of prestressed concrete and spans 17 sections, stretching 318.2 meters (1044 feet) end to end. Daily traffic averages 9,860 vehicles, placing it in the moderately-trafficked tier of Iowa bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 0/9, superstructure at 0/9, substructure at 0/9. The weakest component sits in critical condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How 1ST AVE S compares
Age against the county: built in 1968, earlier than 148 of Webster's 190 bridges with a recorded construction year (78%), against a county median build year of 1986. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Iowa bridges with a recorded inventory load rating (23,718 of 23,719 rated).
1ST AVE S vs every rated Iowa bridge
Inventory load rating (metric tons), FHWA NBI, this state
0 Top 99% higher than 1% 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.
Webster inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 190 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
- 1968
- Last Reconstructed
- 1978
- Material
- Prestressed Concrete
- Number of Spans
- 17
- Structure Length
- 318.2 m (1044 ft)
- Deck Width
- 11.9 m (39 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 9,860 vehicles/day
- Structure Number
- 000000000005040
Condition Analysis
- • The deck (driving surface) rates critical at 0/9, with severe deterioration on the latest inspection.
- • The superstructure (beams and supports above the deck) is in critical condition (0/9), with severe deterioration recorded on the inspecting agency's 0-9 scale.
- • At 0/9, the substructure (piers and abutments) is in critical shape, with severe wear recorded for this vintage.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
1ST AVE S 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 1ST AVE S against other structures in Webster 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 1ST AVE S?
1ST AVE S in Webster, Iowa has a deck rating of 0/9, superstructure rating of 0/9, and substructure rating of 0/9 on the FHWA's 0–9 scale.
How often is 1ST AVE S inspected?
1ST AVE S'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 9,860 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 1ST AVE S 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 1ST AVE S?
1ST AVE S has an NBI inventory load rating of 0.0 metric tons.
Who is responsible for maintaining 1ST AVE S?
1ST AVE S is owned and maintained by City/Municipal Highway Agency.
How old is 1ST AVE S and does age affect safety?
1ST AVE S was built in 1968, making it 58 years old and last reconstructed in 1978.
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.