220 ST
Carrying 220 ST over BR ROBINSON CREEK
088060401, Delaware, Iowa
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: 220 ST
The 220 ST bridge in Delaware, Iowa carries 220 ST over BR ROBINSON CREEK. It was built in 1922, making it 104 years old today. It was last reconstructed in 1962, extending its service life. The structure is built primarily of concrete and spans 2 sections, stretching 7.3 meters (24 feet) end to end. Daily traffic averages 1,061 vehicles, placing it in the moderately-trafficked tier of Iowa bridges. It is owned and maintained by County 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 17.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How 220 ST 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 How the historical reference is calculated.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
- 1922
- Last Reconstructed
- 1962
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 7.3 m (24 ft)
- Deck Width
- 13.9 m (46 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 1,061 vehicles/day
- Structure Number
- 000000000023010
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
220 ST 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 220 ST against other structures in Delaware 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 220 ST?
220 ST in Delaware, Iowa on the FHWA's 0–9 scale.
How often is 220 ST inspected?
220 ST'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 1,061 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 220 ST 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 220 ST?
220 ST has an NBI inventory load rating of 17.0 metric tons.
Who is responsible for maintaining 220 ST?
220 ST is owned and maintained by County Highway Agency.
How old is 220 ST and does age affect safety?
220 ST was built in 1922, making it 104 years old and last reconstructed in 1962.
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.