US Bridges

STC6731;W 145 N over Burgess Canal

Good

Jefferson County, Idaho · 9.3 N. 0.9 W. Idaho Falls · Structure no. 000000000020885

Built
1961
64 years old
Condition
Good
inspected November 2024
Type
Frame
Concrete
Length
21 ft
1 main span
Daily traffic
2,800
2023 count
Owner
County
County Highway Agency

About this bridge

STC6731;W 145 N over Burgess Canal is a concrete frame carrying STC6731;W 145 N over Burgess Canal in Jefferson County, Idaho. It was built in 1961, so it is 64 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,800 vehicles a day, roughly 7% of them trucks, projected to reach 4,200 by 2042. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSTC6731;W 145 N
CrossesBurgess Canal
Location9.3 N. 0.9 W. Idaho Falls
RouteCounty Highway 6731
CountyJefferson County
StateIdaho
Coordinates43.62622, -112.03925
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2023)
Projected traffic4,200 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$468,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC6731;W 145 N over Burgess Canal built?

It was built in 1961, making it 64 years old in 2025.

What condition is STC6731;W 145 N over Burgess Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does STC6731;W 145 N over Burgess Canal carry?

About 2,800 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is STC6731;W 145 N over Burgess Canal?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 30 ft wide.

Who owns STC6731;W 145 N over Burgess Canal?

It is owned by the County Highway Agency.