US Bridges

SR-30 over Malad River

Fair

Box Elder County, Utah · 0.6 Mi. East of Riverside · Structure no. 0F 321

Built
1975
50 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
7,252
2021 count
Owner
State
State Highway Agency

About this bridge

SR-30 over Malad River is a prestressed concrete stringer/multi-beam or girder carrying SR-30 over Malad 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 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 7,252 vehicles a day, roughly 29% of them trucks, projected to reach 8,702 by 2041. The structure is 98 ft (29.8 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR-30
CrossesMalad River
Location0.6 Mi. East of Riverside
RouteState Highway 30
CountyBox Elder County
StateUtah
Coordinates41.78528, -112.13778
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating13.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length98 ft (29.8 m)
Longest span95 ft (29 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,252 (2021)
Projected traffic8,702 by 2041
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Malad River built?

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

What condition is SR-30 over Malad 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 Malad River carry?

About 7,252 vehicles per day (2021 count), of which roughly 29% are trucks.

How long is SR-30 over Malad River?

The structure is 98 ft (29.8 m) long with a longest span of 95 ft (29 m) and a deck 40 ft wide.

Who owns SR-30 over Malad River?

It is owned by the State Highway Agency.