US Bridges

1120 North Road over Stratton Canal

FairPosted for load

Lincoln County, Idaho · 3.5 N. 1.5 E. Richfield · Structure no. 000000000025015

Built
1950
75 years old, rebuilt 1970
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
39 ft
2 main spans
Daily traffic
50
2023 count
Owner
Local
Other Local Agency

About this bridge

1120 North Road over Stratton Canal is a concrete continuous stringer/multi-beam or girder carrying 1120 North Road over Stratton Canal in Lincoln County, Idaho. It was built in 1950 and reconstructed in 1970, so it is 75 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 5% of them trucks, projected to reach 75 by 2039. The structure is 39 ft (11.9 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries1120 North Road
CrossesStratton Canal
Location3.5 N. 1.5 E. Richfield
RouteCounty Highway 0
StateIdaho
Coordinates43.09831, -114.12442
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.8 US tons
Inventory rating8.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length39 ft (11.9 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$374,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1120 North Road over Stratton Canal built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1970.

What condition is 1120 North Road over Stratton 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 November 2024.

How much traffic does 1120 North Road over Stratton Canal carry?

About 50 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 1120 North Road over Stratton Canal?

The structure is 39 ft (11.9 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns 1120 North Road over Stratton Canal?

It is owned by the Other Local Agency.