S21C COMSTOCK SPUR
Carrying S21C COMSTOCK SPUR over MIDDLE LOUP RIVER
0W COMSTOCK, Custer, Nebraska
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
S21C COMSTOCK SPUR in Custer, Nebraska sits above 78% of rated Nebraska bridges on inventory load rating (36 t), while its 1964 build year is earlier than 63% of Custer's recorded-year cohort (303 bridges).
S21C COMSTOCK SPUR in Custer, Nebraska is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1964, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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 NE:SS21C00711
INTERSTATE-ERA · STEEL · LONG-SPAN-RUN · SUB-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- LONG-SPAN-RUN 4 spans
- SUB-LED Substructure-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
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: S21C COMSTOCK SPUR
The S21C COMSTOCK SPUR bridge in Custer, Nebraska carries S21C COMSTOCK SPUR over MIDDLE LOUP RIVER. It was built in 1964, making it 62 years old today. It was last reconstructed in 1991, extending its service life. The structure is built primarily of steel continuous and spans 4 sections, stretching 76.8 meters (252 feet) end to end. Daily traffic averages 170 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 8/9, superstructure at 8/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range.
How S21C COMSTOCK SPUR compares
Age against the county: built in 1964, earlier than 190 of Custer's 303 bridges with a recorded construction year (63%), against a county median build year of 1975. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Nebraska bridges with a recorded inventory load rating (15,392 of 15,398 rated).
S21C COMSTOCK SPUR vs every rated Nebraska bridge
Inventory load rating (metric tons), FHWA NBI, this state
36 Top 22% higher than 78% of 15,392 bridges
rated Nebraska 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.
Custer inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 303 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
- 1964
- Last Reconstructed
- 1991
- Material
- Steel Continuous
- Number of Spans
- 4
- Structure Length
- 76.8 m (252 ft)
- Deck Width
- 11.8 m (39 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 170 vehicles/day
- Structure Number
- SS21C00711
Condition Analysis
- • The deck (driving surface) rates good at 8/9, 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) rates good at 7/9, with no significant deterioration on file.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether S21C COMSTOCK SPUR is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare S21C COMSTOCK SPUR against other structures in Custer 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 S21C COMSTOCK SPUR?
S21C COMSTOCK SPUR in Custer, Nebraska has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is S21C COMSTOCK SPUR inspected?
S21C COMSTOCK SPUR'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 170 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. S21C COMSTOCK SPUR is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for S21C COMSTOCK SPUR?
S21C COMSTOCK SPUR has an NBI inventory load rating of 36.0 metric tons.
Who is responsible for maintaining S21C COMSTOCK SPUR?
S21C COMSTOCK SPUR is owned and maintained by State Highway Agency.
How old is S21C COMSTOCK SPUR and does age affect safety?
S21C COMSTOCK SPUR was built in 1964, making it 62 years old and last reconstructed in 1991.
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.