41480 299th Street
Carrying 41480 299th Street over Emanuel Creek
4N & 1.2W of Tyndall, Bon Homme, South Dakota
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
41480 299th Street in Bon Homme, South Dakota sits above 1% of rated South Dakota bridges on inventory load rating (0 t), while its 1905 build year is earlier than 97% of Bon Homme's recorded-year cohort (126 bridges).
41480 299th Street in Bon Homme, South Dakota is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1905, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 1. 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 SD:000000005138080
PRE-1950 · STEEL · SINGLE-SPAN · SUPER-LED · TRACE-ADT · TRACE-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- STEEL Steel
- SINGLE-SPAN Single span
- SUPER-LED Superstructure-led
- TRACE-ADT Trace ADT
- TRACE-LOAD Trace 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: 41480 299th Street
The 41480 299th Street bridge in Bon Homme, South Dakota carries 41480 299th Street over Emanuel Creek. It was built in 1905, making it 121 years old today. It was last reconstructed in 1965, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 19.9 meters (65 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of South Dakota bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 1/9, substructure at 3/9. The weakest component sits in critical 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 41480 299th Street compares
Age against the county: built in 1905, earlier than 122 of Bon Homme's 126 bridges with a recorded construction year (97%), against a county median build year of 1964. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across South Dakota bridges with a recorded inventory load rating (5,886 of 5,887 rated).
41480 299th Street vs every rated South Dakota bridge
Inventory load rating (metric tons), FHWA NBI, this state
0 Top 99% higher than 1% of 5,886 bridges
rated South Dakota 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.
Bon Homme inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 126 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
- 1905
- Last Reconstructed
- 1965
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 19.9 m (65 ft)
- Deck Width
- 4.8 m (16 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 20 vehicles/day
- Structure Number
- 000000005138080
Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 1/9, the superstructure (beams and supports above the deck) is in critical shape, with severe wear recorded for this vintage.
- • The substructure (piers and abutments) rates poor at 3/9, with advanced deterioration recorded on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
41480 299th Street 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 41480 299th Street against other structures in Bon Homme and across South Dakota. South Dakota 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 41480 299th Street?
41480 299th Street in Bon Homme, South Dakota has a deck rating of 5/9, superstructure rating of 1/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.
How often is 41480 299th Street inspected?
41480 299th Street'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 20 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 41480 299th Street 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 41480 299th Street?
41480 299th Street has an NBI inventory load rating of 0.0 metric tons.
Who is responsible for maintaining 41480 299th Street?
41480 299th Street is owned and maintained by County Highway Agency.
How old is 41480 299th Street and does age affect safety?
41480 299th Street was built in 1905, making it 121 years old and last reconstructed in 1965.
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.