N31
Carrying N31 over BIG PAPILLION CREEK TRIB
7N ELKHORN, Douglas, Nebraska
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: N31
The N31 bridge in Douglas, Nebraska carries N31 over BIG PAPILLION CREEK TRIB. It was built in 1959, making it 67 years old today. It was last reconstructed in 1998, extending its service life. The structure is built primarily of concrete continuous and spans 3 sections, stretching 37.5 meters (123 feet) end to end. Daily traffic averages 2,865 vehicles, placing it in the moderately-trafficked tier of Nebraska bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 5/9. 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 37.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How N31 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 How the historical reference is calculated.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
- 1959
- Last Reconstructed
- 1998
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 37.5 m (123 ft)
- Deck Width
- 13.9 m (46 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 2,865 vehicles/day
- Structure Number
- S031 03175
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
- • The superstructure (beams and supports above the deck) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
N31 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 N31 against other structures in Douglas 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 N31?
N31 in Douglas, Nebraska has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is N31 inspected?
N31'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 2,865 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N31 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 N31?
N31 has an NBI inventory load rating of 37.0 metric tons.
Who is responsible for maintaining N31?
N31 is owned and maintained by State Highway Agency.
How old is N31 and does age affect safety?
N31 was built in 1959, making it 67 years old and last reconstructed in 1998.
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.