US Bridges

I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic

Fair

Oneida County, Idaho · 10.3 S. Malad · Structure no. 000000000010955

Built
1975
50 years old
Condition
Fair
inspected October 2022
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
136 ft
1 main span
Daily traffic
6,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic is a prestressed concrete box beam or girders - single or spread carrying I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic in Oneida County, Idaho. It was built in 1975, so it is 50 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 6,500 vehicles a day, roughly 21% of them trucks, projected to reach 9,750 by 2042. The structure is 136 ft (41.5 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI 15 Nbl
CrossesStc 1702;WOODRUFF Rd.Ic
Location10.3 S. Malad
RouteInterstate 15
CountyOneida County
StateIdaho
Coordinates42.03664, -112.21094
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span135 ft (41.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2023)
Projected traffic9,750 by 2042
Trucks21%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic built?

It was built in 1975, making it 50 years old in 2025.

What condition is I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic 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 2022.

How much traffic does I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic carry?

About 6,500 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic?

The structure is 136 ft (41.5 m) long with a longest span of 135 ft (41.1 m) and a deck 44 ft wide.

Who owns I 15 Nbl over Stc 1702;WOODRUFF Rd.Ic?

It is owned by the State Highway Agency.