4421: SHEEPS TRAIL
Carrying 4421: SHEEPS TRAIL over Big Sandy River
7 mi SE of Farson, WY, Sweetwater, Wyoming
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: 4421: SHEEPS TRAIL
The 4421: SHEEPS TRAIL bridge in Sweetwater, Wyoming carries 4421: SHEEPS TRAIL over Big Sandy River. It was built in 2014, making it 12 years old today. The structure is built primarily of steel and spans 1 section, stretching 26.7 meters (88 feet) end to end. Daily traffic averages 25 vehicles, placing it in the lower-traffic tier of Wyoming bridges. It is owned and maintained by Bureau of Land Management.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 8/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 42.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How 4421: SHEEPS TRAIL compares
Live comparison across Wyoming.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 2014
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 26.7 m (88 ft)
- Deck Width
- 4.3 m (14 ft)
- Owner
- Bureau of Land Management
- Avg Daily Traffic
- 25 vehicles/day
- Structure Number
- 0000000L2014634
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • At 8/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether 4421: SHEEPS TRAIL 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 4421: SHEEPS TRAIL against other structures in Sweetwater and across Wyoming. Wyoming 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 4421: SHEEPS TRAIL?
4421: SHEEPS TRAIL in Sweetwater, Wyoming has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is 4421: SHEEPS TRAIL inspected?
4421: SHEEPS TRAIL'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 25 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 4421: SHEEPS TRAIL 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 4421: SHEEPS TRAIL?
4421: SHEEPS TRAIL has an NBI inventory load rating of 42.8 metric tons.
Who is responsible for maintaining 4421: SHEEPS TRAIL?
4421: SHEEPS TRAIL is owned and maintained by Bureau of Land Management.
How old is 4421: SHEEPS TRAIL and does age affect safety?
4421: SHEEPS TRAIL was built in 2014, making it 12 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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.