US Bridges

SH 36 over I 15;DEEP Cr;sh 36 Ic

Fair

Oneida County, Idaho · 3.9 N. Malad · Structure no. 000000000014095

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
220 ft
3 main spans
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

SH 36 over I 15;DEEP Cr;sh 36 Ic is a prestressed concrete stringer/multi-beam or girder carrying SH 36 over I 15;DEEP Cr;sh 36 Ic in Oneida County, Idaho. It was built in 1964, so it is 61 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 5 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 1,000 vehicles a day, roughly 11% of them trucks, projected to reach 1,500 by 2042. The structure is 220 ft (67.1 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 36
CrossesI 15;DEEP Cr;sh 36 Ic
Location3.9 N. Malad
RouteState Highway 36
CountyOneida County
StateIdaho
Coordinates42.23472, -112.23111
Functional classRural Major 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span47 ft (14.3 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,500 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 36 over I 15;DEEP Cr;sh 36 Ic built?

It was built in 1964, making it 61 years old in 2025.

What condition is SH 36 over I 15;DEEP Cr;sh 36 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 July 2024.

How much traffic does SH 36 over I 15;DEEP Cr;sh 36 Ic carry?

About 1,000 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SH 36 over I 15;DEEP Cr;sh 36 Ic?

The structure is 220 ft (67.1 m) long with a longest span of 47 ft (14.3 m) and a deck 33 ft wide.

Who owns SH 36 over I 15;DEEP Cr;sh 36 Ic?

It is owned by the State Highway Agency.