US Bridges

SR-30 over Bear River

Fair

Box Elder County, Utah · 2 Miles East of Riverside · Structure no. 0F 322

Built
1975
50 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
410 ft
4 main spans
Daily traffic
6,330
2014 count
Owner
State
State Highway Agency

About this bridge

SR-30 over Bear River is a prestressed concrete continuous stringer/multi-beam or girder carrying SR-30 over Bear River in Box Elder County, Utah. It was built in 1975, so it is 50 years old, older than the Utah average of 40.1 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 6,330 vehicles a day, roughly 29% of them trucks, projected to reach 7,913 by 2034. The structure is 410 ft (125 m) long and 40 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSR-30
CrossesBear River
Location2 Miles East of Riverside
RouteState Highway 30
CountyBox Elder County
StateUtah
Coordinates41.78432, -112.11235
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length410 ft (125 m)
Longest span102 ft (31.2 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic6,330 (2014)
Projected traffic7,913 by 2034
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-30 over Bear River built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR-30 over Bear River 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 2023.

How much traffic does SR-30 over Bear River carry?

About 6,330 vehicles per day (2014 count), of which roughly 29% are trucks.

How long is SR-30 over Bear River?

The structure is 410 ft (125 m) long with a longest span of 102 ft (31.2 m) and a deck 40 ft wide.

Who owns SR-30 over Bear River?

It is owned by the State Highway Agency.