US Bridges

SH 33 over I 15 Nb-Sb;sage JCT Ic

Good

Jefferson County, Idaho · 8.5 N. Roberts · Structure no. 000000000016641

Built
1995
30 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
291 ft
4 main spans
Daily traffic
4,200
2023 count
Owner
State
State Highway Agency

About this bridge

SH 33 over I 15 Nb-Sb;sage JCT Ic is a steel continuous stringer/multi-beam or girder carrying SH 33 over I 15 Nb-Sb;sage JCT Ic in Jefferson County, Idaho. It was built in 1995, so it is 30 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 14% of them trucks, projected to reach 6,300 by 2042. The structure is 291 ft (88.7 m) long and 54 ft wide.

Location

Open in Google Maps
CarriesSH 33
CrossesI 15 Nb-Sb;sage JCT Ic
Location8.5 N. Roberts
RouteState Highway 33
CountyJefferson County
StateIdaho
Coordinates43.83075, -112.19558
Functional classRural 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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length291 ft (88.7 m)
Longest span93 ft (28.3 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2023)
Projected traffic6,300 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 SH 33 over I 15 Nb-Sb;sage JCT Ic built?

It was built in 1995, making it 30 years old in 2025.

What condition is SH 33 over I 15 Nb-Sb;sage JCT Ic 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 May 2024.

How much traffic does SH 33 over I 15 Nb-Sb;sage JCT Ic carry?

About 4,200 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SH 33 over I 15 Nb-Sb;sage JCT Ic?

The structure is 291 ft (88.7 m) long with a longest span of 93 ft (28.3 m) and a deck 54 ft wide.

Who owns SH 33 over I 15 Nb-Sb;sage JCT Ic?

It is owned by the State Highway Agency.