GRAND LOOP ROAD
Carrying GRAND LOOP ROAD over TOWER CREEK
18.2 MI. EAST OF MAMMOTH, Teton, Wyoming
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: GRAND LOOP ROAD
The GRAND LOOP ROAD bridge in Teton, Wyoming carries GRAND LOOP ROAD over TOWER CREEK. It was built in 1935, making it 91 years old today. The structure is built primarily of concrete and spans 1 section, stretching 12.2 meters (40 feet) end to end. Daily traffic averages 1,807 vehicles, placing it in the moderately-trafficked tier of Wyoming bridges. It is owned and maintained by National Park Service.
The latest FHWA inspection records show superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 44.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How GRAND LOOP ROAD 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 How the historical reference is calculated.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
- 1935
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 12.2 m (40 ft)
- Deck Width
- 12.0 m (39 ft)
- Owner
- National Park Service
- Avg Daily Traffic
- 1,807 vehicles/day
- Structure Number
- 1570021P0000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether GRAND LOOP ROAD 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 GRAND LOOP ROAD against other structures in Teton 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 GRAND LOOP ROAD?
GRAND LOOP ROAD in Teton, Wyoming, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is GRAND LOOP ROAD inspected?
GRAND LOOP 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 1,807 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. GRAND LOOP ROAD is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for GRAND LOOP ROAD?
GRAND LOOP ROAD has an NBI inventory load rating of 44.4 metric tons.
Who is responsible for maintaining GRAND LOOP ROAD?
GRAND LOOP ROAD is owned and maintained by National Park Service.
How old is GRAND LOOP ROAD and does age affect safety?
GRAND LOOP 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.
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.