US Bridges

US 30 over I 84 Wb-Eb;w.Bliss Ic

Fair

Gooding County, Idaho · 1.7 W. Bliss · Structure no. 000000000013535

Built
1974
51 years old
Condition
Fair
inspected April 2021
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
304 ft
2 main spans
Daily traffic
940
2023 count
Owner
State
State Highway Agency

About this bridge

US 30 over I 84 Wb-Eb;w.Bliss Ic is a prestressed concrete continuous box beam or girders - single or spread carrying US 30 over I 84 Wb-Eb;w.Bliss Ic in Gooding County, Idaho. It was built in 1974, so it is 51 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 940 vehicles a day, roughly 12% of them trucks, projected to reach 1,410 by 2042. The structure is 304 ft (92.7 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesUS 30
CrossesI 84 Wb-Eb;w.Bliss Ic
Location1.7 W. Bliss
RouteU.S. Route 30
CountyGooding County
StateIdaho
Coordinates42.93844, -114.99353
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
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 rating52 US tons
Inventory rating37 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length304 ft (92.7 m)
Longest span148 ft (45.1 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic940 (2023)
Projected traffic1,410 by 2042
Trucks12%
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 US 30 over I 84 Wb-Eb;w.Bliss Ic built?

It was built in 1974, making it 51 years old in 2025.

What condition is US 30 over I 84 Wb-Eb;w.Bliss 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 April 2021.

How much traffic does US 30 over I 84 Wb-Eb;w.Bliss Ic carry?

About 940 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 30 over I 84 Wb-Eb;w.Bliss Ic?

The structure is 304 ft (92.7 m) long with a longest span of 148 ft (45.1 m) and a deck 40 ft wide.

Who owns US 30 over I 84 Wb-Eb;w.Bliss Ic?

It is owned by the State Highway Agency.