US Bridges

Stc 8433; 11th Ave over I 84;11th Ave N. Gs

Good

Canyon County, Idaho · In NAMPA;11th Ave N. · Structure no. 000000000021886

Built
2010
15 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
240 ft
2 main spans
Daily traffic
4,200
2023 count
Owner
State
State Highway Agency

About this bridge

Stc 8433; 11th Ave over I 84;11th Ave N. Gs is a prestressed concrete stringer/multi-beam or girder carrying Stc 8433; 11th Ave over I 84;11th Ave N. Gs in Canyon County, Idaho. It was built in 2010, so it is 15 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,200 vehicles a day, roughly 3% of them trucks, projected to reach 6,300 by 2042. The structure is 240 ft (73.2 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesStc 8433; 11th Ave
CrossesI 84;11th Ave N. Gs
LocationIn NAMPA;11th Ave N.
RouteCity Street 8433
CountyCanyon County
StateIdaho
Coordinates43.598, -116.53736
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length240 ft (73.2 m)
Longest span117 ft (35.6 m)
Deck width47 ft (14.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2023)
Projected traffic6,300 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Stc 8433; 11th Ave over I 84;11th Ave N. Gs built?

It was built in 2010, making it 15 years old in 2025.

What condition is Stc 8433; 11th Ave over I 84;11th Ave N. Gs 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 January 2024.

How much traffic does Stc 8433; 11th Ave over I 84;11th Ave N. Gs carry?

About 4,200 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Stc 8433; 11th Ave over I 84;11th Ave N. Gs?

The structure is 240 ft (73.2 m) long with a longest span of 117 ft (35.6 m) and a deck 47 ft wide.

Who owns Stc 8433; 11th Ave over I 84;11th Ave N. Gs?

It is owned by the State Highway Agency.