US Bridges

I 84B ;first Ave over I 84;E.GLENNS Ferry Ic

Fair

Elmore County, Idaho · At Glenns Ferry Ncl · Structure no. 000000000016585

Built
1976
49 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
282 ft
2 main spans
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 84B ;first Ave over I 84;E.GLENNS Ferry Ic is a steel continuous stringer/multi-beam or girder carrying I 84B ;first Ave over I 84;E.GLENNS Ferry Ic in Elmore County, Idaho. It was built in 1976, so it is 49 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 9% of them trucks, projected to reach 1,500 by 2042. The structure is 282 ft (86 m) long and 40 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

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CarriesI 84B ;first Ave
CrossesI 84;E.GLENNS Ferry Ic
LocationAt Glenns Ferry Ncl
RouteCity Street 84
CountyElmore County
StateIdaho
Coordinates42.95956, -115.29028
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 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 rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length282 ft (86 m)
Longest span149 ft (45.4 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,500 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 84B ;first Ave over I 84;E.GLENNS Ferry Ic built?

It was built in 1976, making it 49 years old in 2025.

What condition is I 84B ;first Ave over I 84;E.GLENNS Ferry 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 2024.

How much traffic does I 84B ;first Ave over I 84;E.GLENNS Ferry Ic carry?

About 1,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I 84B ;first Ave over I 84;E.GLENNS Ferry Ic?

The structure is 282 ft (86 m) long with a longest span of 149 ft (45.4 m) and a deck 40 ft wide.

Who owns I 84B ;first Ave over I 84;E.GLENNS Ferry Ic?

It is owned by the State Highway Agency.