US Bridges

I 184;W Fairview over Settlers Canal

Fair

Ada County, Idaho · In Boise · Structure no. 000000000018995

Built
1967
58 years old, rebuilt 1991
Condition
Fair
inspected October 2021
Type
Culvert
Concrete
Length
45 ft
2 main spans
Daily traffic
56,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 184;W Fairview over Settlers Canal is a concrete culvert carrying I 184;W Fairview over Settlers Canal in Ada County, Idaho. It was built in 1967 and reconstructed in 1991, so it is 58 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 56,500 vehicles a day, roughly 4% of them trucks, projected to reach 84,750 by 2042. The structure is 45 ft (13.7 m) long and 452 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesI 184;W Fairview
CrossesSettlers Canal
LocationIn Boise
RouteInterstate 184
CountyAda County
StateIdaho
Coordinates43.61778, -116.23417
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span19 ft (5.8 m)
Deck width452 ft (137.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56,500 (2023)
Projected traffic84,750 by 2042
Trucks4%
Lanes on structure13
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.6 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 184;W Fairview over Settlers Canal built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1991.

What condition is I 184;W Fairview over Settlers 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 October 2021.

How much traffic does I 184;W Fairview over Settlers Canal carry?

About 56,500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is I 184;W Fairview over Settlers Canal?

The structure is 45 ft (13.7 m) long with a longest span of 19 ft (5.8 m) and a deck 452 ft wide.

Who owns I 184;W Fairview over Settlers Canal?

It is owned by the State Highway Agency.