US Bridges

Stc 9623;W. Wright over New York Canal

Fair

Ada County, Idaho · In Boise;w.Wright ST · Structure no. 000000000026168

Built
1989
36 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
2 main spans
Daily traffic
16,000
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 9623;W. Wright over New York Canal is a prestressed concrete stringer/multi-beam or girder carrying Stc 9623;W. Wright over New York Canal in Ada County, Idaho. It was built in 1989, so it is 36 years old, younger 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 16,000 vehicles a day, roughly 2% of them trucks, projected to reach 24,000 by 2042. The structure is 125 ft (38.1 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesStc 9623;W. Wright
CrossesNew York Canal
LocationIn Boise;w.Wright ST
RouteCity Street 9623
CountyAda County
StateIdaho
Coordinates43.57314, -116.24082
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length125 ft (38.1 m)
Longest span61 ft (18.6 m)
Deck width54 ft (16.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2023)
Projected traffic24,000 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 9623;W. Wright over New York Canal built?

It was built in 1989, making it 36 years old in 2025.

What condition is Stc 9623;W. Wright over New York 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 Stc 9623;W. Wright over New York Canal carry?

About 16,000 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Stc 9623;W. Wright over New York Canal?

The structure is 125 ft (38.1 m) long with a longest span of 61 ft (18.6 m) and a deck 54 ft wide.

Who owns Stc 9623;W. Wright over New York Canal?

It is owned by the County Highway Agency.