I-25 Service Road
Carrying I-25 Service Road over BNSF Railway
Cheyenne - Chugwater, Platte, Wyoming
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
I-25 Service Road in Platte, Wyoming sits above 9% of rated Wyoming bridges on inventory load rating (24 t), while its 1935 build year is earlier than 94% of Platte's recorded-year cohort (160 bridges).
I-25 Service Road in Platte, Wyoming is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1935, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 3. 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 WY:ADA
PRE-1950 · STEEL · LONG-SPAN-RUN · DECK-LED · LOCAL-ADT · STANDARD-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- STEEL Steel
- LONG-SPAN-RUN 6 spans
- DECK-LED Deck-led
- LOCAL-ADT Local 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: I-25 Service Road
The I-25 Service Road bridge in Platte, Wyoming carries I-25 Service Road over BNSF Railway. It was built in 1935, making it 91 years old today. The structure is built primarily of steel and spans 6 sections, stretching 87.9 meters (288 feet) end to end. Daily traffic averages 86 vehicles, placing it in the lower-traffic tier of Wyoming bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 3/9, superstructure at 5/9, substructure at 5/9. 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 I-25 Service Road compares
Age against the county: built in 1935, earlier than 151 of Platte's 160 bridges with a recorded construction year (94%), against a county median build year of 1969. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Wyoming bridges with a recorded inventory load rating (3,118 of 3,136 rated).
I-25 Service Road vs every rated Wyoming bridge
Inventory load rating (metric tons), FHWA NBI, this state
24 Top 91% higher than 9% of 3,118 bridges
rated Wyoming 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.
Platte inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 160 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
- 1935
- Material
- Steel
- Number of Spans
- 6
- Structure Length
- 87.9 m (288 ft)
- Deck Width
- 9.9 m (32 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 86 vehicles/day
- Structure Number
- ADA
Condition Analysis
- • At 3/9, 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 fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
I-25 Service Road 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 I-25 Service Road against other structures in Platte 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 I-25 Service Road?
I-25 Service Road in Platte, Wyoming has a deck rating of 3/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is I-25 Service Road inspected?
I-25 Service Road'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 86 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-25 Service Road 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 I-25 Service Road?
I-25 Service Road has an NBI inventory load rating of 23.5 metric tons.
Who is responsible for maintaining I-25 Service Road?
I-25 Service Road is owned and maintained by State Highway Agency.
How old is I-25 Service Road and does age affect safety?
I-25 Service Road was built in 1935, making it 91 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.
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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.