I-25 SBL
Carrying I-25 SBL over Lodgepole Creek
Cheyenne - Chugwater, Laramie, Wyoming
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
I-25 SBL in Laramie, Wyoming sits above 31% of rated Wyoming bridges on inventory load rating (31 t), while its 1970 build year is earlier than 47% of Laramie's recorded-year cohort (254 bridges).
I-25 SBL in Laramie, Wyoming is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1970, 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 WY:ABX
INTERSTATE-ERA · STEEL · MULTI-SPAN · DECK-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 3 spans
- DECK-LED Deck-led
- ARTERIAL-ADT Arterial 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.
Structural health score
A composite of the deck, superstructure, and substructure NBI condition ratings plus the inventory load rating, benchmarked against the full national bridge corpus, distinct from the Good/Fair/Poor category above.
Bridge Snapshot: I-25 SBL
The I-25 SBL bridge in Laramie, Wyoming carries I-25 SBL over Lodgepole Creek. It was built in 1970, making it 56 years old today. The structure is built primarily of steel continuous and spans 3 sections, stretching 65.8 meters (216 feet) end to end. Daily traffic averages 3,277 vehicles, placing it in the moderately-trafficked tier of Wyoming bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection places the weakest component in poor condition (see the full component ratings below). 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 SBL compares
Age against the county: built in 1970, earlier than 120 of Laramie's 254 bridges with a recorded construction year (47%), against a county median build year of 1968. This is one of the newer structures in its county.
Live comparison across Wyoming bridges with a recorded inventory load rating (3,118 of 3,136 rated).
I-25 SBL vs every rated Wyoming bridge
Inventory load rating (metric tons), FHWA NBI, this state
31 Top 69% higher than 31% 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.
Laramie inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 254 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
- 1970
- Material
- Steel Continuous
- Number of Spans
- 3
- Structure Length
- 65.8 m (216 ft)
- Deck Width
- 13.6 m (45 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 3,277 vehicles/day
- Structure Number
- ABX
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) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
I-25 SBL 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 SBL against other structures in Laramie 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 SBL?
I-25 SBL in Laramie, Wyoming has a deck rating of 4/9, superstructure rating of 5/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is I-25 SBL inspected?
I-25 SBL'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 3,277 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-25 SBL 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 SBL?
I-25 SBL has an NBI inventory load rating of 30.8 metric tons.
Who is responsible for maintaining I-25 SBL?
I-25 SBL is owned and maintained by State Highway Agency.
How old is I-25 SBL and does age affect safety?
I-25 SBL was built in 1970, making it 56 years old.
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.