US Bridges

I 15 Nbl over SH 38;MALAD City Ic

Fair

Oneida County, Idaho · At Malad · Structure no. 000000000011000

Built
1975
50 years old
Condition
Fair
inspected October 2022
Type
Box Beam or Girders - Single or Spread
Concrete
Length
131 ft
1 main span
Daily traffic
6,250
2023 count
Owner
State
State Highway Agency

About this bridge

I 15 Nbl over SH 38;MALAD City Ic is a concrete box beam or girders - single or spread carrying I 15 Nbl over SH 38;MALAD City 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 6,250 vehicles a day, roughly 22% of them trucks, projected to reach 9,375 by 2042. The structure is 131 ft (39.9 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI 15 Nbl
CrossesSH 38;MALAD City Ic
LocationAt Malad
RouteInterstate 15
CountyOneida County
StateIdaho
Coordinates42.18301, -112.23241
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 rating51.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length131 ft (39.9 m)
Longest span130 ft (39.6 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,250 (2023)
Projected traffic9,375 by 2042
Trucks22%
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 SH 38;MALAD City Ic built?

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

What condition is I 15 Nbl over SH 38;MALAD City 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 SH 38;MALAD City Ic carry?

About 6,250 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I 15 Nbl over SH 38;MALAD City Ic?

The structure is 131 ft (39.9 m) long with a longest span of 130 ft (39.6 m) and a deck 44 ft wide.

Who owns I 15 Nbl over SH 38;MALAD City Ic?

It is owned by the State Highway Agency.