SO 3RD AVE
Carrying SO 3RD AVE over ANSON CREEK
083181102, Marshall, Iowa
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SO 3RD AVE
The SO 3RD AVE bridge in Marshall, Iowa carries SO 3RD AVE over ANSON CREEK. It was built in 1979, making it 47 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 11.0 meters (36 feet) end to end. Daily traffic averages 418 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by City/Municipal 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. Its NBI inventory load rating is 32.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SO 3RD AVE compares
Live comparison across Iowa.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1979
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 11.0 m (36 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 418 vehicles/day
- Structure Number
- 000000000502820
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
SO 3RD 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 SO 3RD AVE against other structures in Marshall 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 SO 3RD AVE?
SO 3RD AVE in Marshall, Iowa on the FHWA's 0–9 scale.
How often is SO 3RD AVE inspected?
SO 3RD 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 418 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SO 3RD 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 SO 3RD AVE?
SO 3RD AVE has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining SO 3RD AVE?
SO 3RD AVE is owned and maintained by City/Municipal Highway Agency.
How old is SO 3RD AVE and does age affect safety?
SO 3RD AVE was built in 1979, making it 47 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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.