STC 3809;MIDDLE FK
Carrying STC 3809;MIDDLE FK over QUEENS RIVER NO. 2
4.0 N. 4.0 W. ATLANTA, Elmore, Idaho
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
STC 3809;MIDDLE FK in Elmore, Idaho sits above 45% of rated Idaho bridges on inventory load rating (30 t), while its 1962 build year is earlier than 76% of Elmore's recorded-year cohort (97 bridges).
STC 3809;MIDDLE FK in Elmore, Idaho is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1962, 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 ID:000000000027990
INTERSTATE-ERA · STEEL · SINGLE-SPAN · SUB-LED · TRACE-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- SINGLE-SPAN Single span
- SUB-LED Substructure-led
- 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: STC 3809;MIDDLE FK
The STC 3809;MIDDLE FK bridge in Elmore, Idaho carries STC 3809;MIDDLE FK over QUEENS RIVER NO. 2. It was built in 1962, making it 64 years old today. The structure is built primarily of steel and spans 1 section, stretching 19.2 meters (63 feet) end to end. Daily traffic averages 30 vehicles, placing it in the lower-traffic tier of Idaho bridges. It is owned and maintained by Other Local Agencies.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, 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 STC 3809;MIDDLE FK compares
Age against the county: built in 1962, earlier than 74 of Elmore's 97 bridges with a recorded construction year (76%), against a county median build year of 1973. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Idaho bridges with a recorded inventory load rating (4,574 of 4,616 rated).
STC 3809;MIDDLE FK vs every rated Idaho bridge
Inventory load rating (metric tons), FHWA NBI, this state
30 Top 55% higher than 45% of 4,574 bridges
rated Idaho 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.
Elmore inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 97 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
- 1962
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 19.2 m (63 ft)
- Deck Width
- 6.1 m (20 ft)
- Owner
- Other Local Agencies
- Avg Daily Traffic
- 30 vehicles/day
- Structure Number
- 000000000027990
Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
STC 3809;MIDDLE FK 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 STC 3809;MIDDLE FK against other structures in Elmore and across Idaho. Idaho 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 STC 3809;MIDDLE FK?
STC 3809;MIDDLE FK in Elmore, Idaho has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is STC 3809;MIDDLE FK inspected?
STC 3809;MIDDLE FK'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 30 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. STC 3809;MIDDLE FK 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 STC 3809;MIDDLE FK?
STC 3809;MIDDLE FK has an NBI inventory load rating of 29.9 metric tons.
Who is responsible for maintaining STC 3809;MIDDLE FK?
STC 3809;MIDDLE FK is owned and maintained by Other Local Agencies.
How old is STC 3809;MIDDLE FK and does age affect safety?
STC 3809;MIDDLE FK was built in 1962, making it 64 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.