Ni Cnty Rd 9
Carrying Ni Cnty Rd 9 over Cheyenne River
6 Mi. N.E.Of Mule Crk Jct, Niobrara, Wyoming
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Ni Cnty Rd 9 in Niobrara, Wyoming sits above 18% of rated Wyoming bridges on inventory load rating (27 t), while its 1920 build year is earlier than 97% of Niobrara's recorded-year cohort (34 bridges).
Ni Cnty Rd 9 in Niobrara, Wyoming is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1920, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. 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 WY:DSD
PRE-1950 · STEEL · SINGLE-SPAN · TIED-CTRL · TRACE-ADT · STANDARD-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- STEEL Steel
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- TRACE-ADT Trace ADT
- STANDARD-LOAD Standard 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: Ni Cnty Rd 9
The Ni Cnty Rd 9 bridge in Niobrara, Wyoming carries Ni Cnty Rd 9 over Cheyenne River. It was built in 1920, making it 106 years old today. It was last reconstructed in 1960, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 40.5 meters (133 feet) end to end. Daily traffic averages 5 vehicles, placing it in the lower-traffic tier of Wyoming bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 5/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How Ni Cnty Rd 9 compares
Age against the county: built in 1920, earlier than 33 of Niobrara's 34 bridges with a recorded construction year (97%), against a county median build year of 1990. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Wyoming bridges with a recorded inventory load rating (3,118 of 3,136 rated).
Ni Cnty Rd 9 vs every rated Wyoming bridge
Inventory load rating (metric tons), FHWA NBI, this state
27 Top 82% higher than 18% of 3,118 bridges
rated Wyoming 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.
Niobrara inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 34 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
- 1920
- Last Reconstructed
- 1960
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 40.5 m (133 ft)
- Deck Width
- 5.4 m (18 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 5 vehicles/day
- Structure Number
- DSD
Condition Analysis
- • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
- • At 5/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear on file for this vintage.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
Ni Cnty Rd 9 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 Ni Cnty Rd 9 against other structures in Niobrara and across Wyoming. Wyoming 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 Ni Cnty Rd 9?
Ni Cnty Rd 9 in Niobrara, Wyoming has a deck rating of 4/9, superstructure rating of 5/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is Ni Cnty Rd 9 inspected?
Ni Cnty Rd 9'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 5 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Ni Cnty Rd 9 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 Ni Cnty Rd 9?
Ni Cnty Rd 9 has an NBI inventory load rating of 27.1 metric tons.
Who is responsible for maintaining Ni Cnty Rd 9?
Ni Cnty Rd 9 is owned and maintained by County Highway Agency.
How old is Ni Cnty Rd 9 and does age affect safety?
Ni Cnty Rd 9 was built in 1920, making it 106 years old and last reconstructed in 1960.
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.
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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.