US Bridges

US 93 over Lateral No. 1

Fair

Twin Falls County, Idaho · 25.1 N. Nevada Line · Structure no. 000000000017566

Built
2006
19 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
4,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 93 over Lateral No. 1 is a prestressed concrete box beam or girders - multiple carrying US 93 over Lateral No. 1 in Twin Falls County, Idaho. It was built in 2006, so it is 19 years old, younger 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 4,300 vehicles a day, roughly 30% of them trucks, projected to reach 6,450 by 2042. The structure is 64 ft (19.5 m) long and 76 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesUS 93
CrossesLateral No. 1
Location25.1 N. Nevada Line
RouteU.S. Route 93
CountyTwin Falls County
StateIdaho
Coordinates42.32506, -114.57478
Functional classRural Principal Arterial - Other

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length64 ft (19.5 m)
Longest span62 ft (19 m)
Deck width76 ft (23.2 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2023)
Projected traffic6,450 by 2042
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 over Lateral No. 1 built?

It was built in 2006, making it 19 years old in 2025.

What condition is US 93 over Lateral No. 1 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 November 2023.

How much traffic does US 93 over Lateral No. 1 carry?

About 4,300 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is US 93 over Lateral No. 1?

The structure is 64 ft (19.5 m) long with a longest span of 62 ft (19 m) and a deck 76 ft wide.

Who owns US 93 over Lateral No. 1?

It is owned by the State Highway Agency.