RS 377
Carrying RS 377 over M.K.& T RAILROAD(ABAN.)
3.0N 3.5E OF MOUND VALLEY, Labette, Kansas
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
RS 377 in Labette, Kansas sits above 28% of rated Kansas bridges on inventory load rating (20 t), while its 1928 build year is earlier than 82% of Labette's recorded-year cohort (349 bridges).
RS 377 in Labette, Kansas is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1928, 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 KS:000000000500430
PRE-1950 · CONCRETE · MULTI-SPAN · SUPER-LED · LOCAL-ADT · LIGHT-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- SUPER-LED Superstructure-led
- LOCAL-ADT Local ADT
- LIGHT-LOAD Light 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: RS 377
The RS 377 bridge in Labette, Kansas carries RS 377 over M.K.& T RAILROAD(ABAN.). It was built in 1928, making it 98 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 34.4 meters (113 feet) end to end. Daily traffic averages 78 vehicles, placing it in the lower-traffic tier of Kansas bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 4/9, substructure at 5/9. 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 RS 377 compares
Age against the county: built in 1928, earlier than 287 of Labette's 349 bridges with a recorded construction year (82%), against a county median build year of 1957. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Kansas bridges with a recorded inventory load rating (24,893 of 24,894 rated).
RS 377 vs every rated Kansas bridge
Inventory load rating (metric tons), FHWA NBI, this state
20 Top 72% higher than 28% of 24,893 bridges
rated Kansas 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.
Labette inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 349 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
- 1928
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 34.4 m (113 ft)
- Deck Width
- 6.9 m (23 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 78 vehicles/day
- Structure Number
- 000000000500430
Condition Analysis
- • The deck (driving surface) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The superstructure (beams and supports above the deck) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
- • The substructure (piers and abutments) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
RS 377 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 RS 377 against other structures in Labette and across Kansas. Kansas 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 RS 377?
RS 377 in Labette, Kansas has a deck rating of 5/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is RS 377 inspected?
RS 377'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 78 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. RS 377 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 RS 377?
RS 377 has an NBI inventory load rating of 19.8 metric tons.
Who is responsible for maintaining RS 377?
RS 377 is owned and maintained by County Highway Agency.
How old is RS 377 and does age affect safety?
RS 377 was built in 1928, making it 98 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.
Share this inspection record
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.