N14
Carrying N14 over MISSOURI RIVER
1.5NE NIOBRARA, Knox, Nebraska
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: N14
The N14 bridge in Knox, Nebraska carries N14 over MISSOURI RIVER. It was built in 1996, making it 30 years old today. The structure is built primarily of steel continuous and spans 16 sections, stretching 900.1 meters (2953 feet) end to end. Daily traffic averages 830 vehicles, placing it in the lower-traffic tier of Nebraska bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, 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. Its NBI inventory load rating is 40.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How N14 compares
Live comparison across Nebraska.
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 How the historical reference is calculated.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
- 1996
- Material
- Steel Continuous
- Number of Spans
- 16
- Structure Length
- 900.1 m (2953 ft)
- Deck Width
- 11.3 m (37 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 830 vehicles/day
- Structure Number
- S014 20330
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
How to read this record
N14 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 N14 against other structures in Knox and across Nebraska. Nebraska 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 N14?
N14 in Knox, Nebraska has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is N14 inspected?
N14'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 830 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N14 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 N14?
N14 has an NBI inventory load rating of 40.0 metric tons.
Who is responsible for maintaining N14?
N14 is owned and maintained by State Highway Agency.
How old is N14 and does age affect safety?
N14 was built in 1996, making it 30 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.