STC 6774;TETON HWY
Carrying STC 6774;TETON HWY over S.FK.TETON RIVER
0.5 N. TETON, Fremont, Idaho
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
STC 6774;TETON HWY in Fremont, Idaho sits above 1% of rated Idaho bridges on inventory load rating (1 t), while its 1977 build year is earlier than 60% of Fremont's recorded-year cohort (137 bridges).
STC 6774;TETON HWY in Fremont, Idaho is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1977, 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:000000000021035
INTERSTATE-ERA · PRESTRESS · MULTI-SPAN · TIED-CTRL · ARTERIAL-ADT · LIGHT-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial 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: STC 6774;TETON HWY
The STC 6774;TETON HWY bridge in Fremont, Idaho carries STC 6774;TETON HWY over S.FK.TETON RIVER. It was built in 1977, making it 49 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 45.7 meters (150 feet) end to end. Daily traffic averages 1,200 vehicles, placing it in the moderately-trafficked tier of Idaho bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How STC 6774;TETON HWY compares
Age against the county: built in 1977, earlier than 82 of Fremont's 137 bridges with a recorded construction year (60%), against a county median build year of 1980. 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 6774;TETON HWY vs every rated Idaho bridge
Inventory load rating (metric tons), FHWA NBI, this state
1 Top 99% higher than 1% 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.
Fremont inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 137 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
- 1977
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 45.7 m (150 ft)
- Deck Width
- 11.6 m (38 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 1,200 vehicles/day
- Structure Number
- 000000000021035
Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear on file for this vintage.
- • 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) rates fair at 5/9, minor deterioration that routine maintenance should address.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
STC 6774;TETON HWY 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 6774;TETON HWY against other structures in Fremont 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 6774;TETON HWY?
STC 6774;TETON HWY in Fremont, Idaho has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is STC 6774;TETON HWY inspected?
STC 6774;TETON HWY'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 1,200 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. STC 6774;TETON HWY 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 6774;TETON HWY?
STC 6774;TETON HWY has an NBI inventory load rating of 0.9 metric tons.
Who is responsible for maintaining STC 6774;TETON HWY?
STC 6774;TETON HWY is owned and maintained by County Highway Agency.
How old is STC 6774;TETON HWY and does age affect safety?
STC 6774;TETON HWY was built in 1977, making it 49 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.