US Bridges

US 20 over Burgess Canal

Fair

Jefferson County, Idaho · 0.7 S. Rigby · Structure no. 000000000012435

Built
1975
50 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
92 ft
1 main span
Daily traffic
28,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 20 over Burgess Canal is a prestressed concrete stringer/multi-beam or girder carrying US 20 over Burgess Canal in Jefferson County, Idaho. It was built in 1975, so it is 50 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 28,500 vehicles a day, roughly 9% of them trucks, projected to reach 42,750 by 2042. The structure is 92 ft (28 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 20
CrossesBurgess Canal
Location0.7 S. Rigby
RouteU.S. Route 20
CountyJefferson County
StateIdaho
Coordinates43.66375, -111.91669
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length92 ft (28 m)
Longest span88 ft (26.8 m)
Deck width90 ft (27.3 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,500 (2023)
Projected traffic42,750 by 2042
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 over Burgess Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is US 20 over Burgess Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does US 20 over Burgess Canal carry?

About 28,500 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US 20 over Burgess Canal?

The structure is 92 ft (28 m) long with a longest span of 88 ft (26.8 m) and a deck 90 ft wide.

Who owns US 20 over Burgess Canal?

It is owned by the State Highway Agency.