US Bridges

16800 N.St Fa# 506 over Malad River

Fair

Box Elder County, Utah · 4800 W. 16800 N. Fielding · Structure no. 003019D

Built
1958
67 years old
Condition
Fair
inspected November 2023
Type
Frame
Concrete
Length
44 ft
1 main span
Daily traffic
1,067
2021 count
Owner
County
County Highway Agency

About this bridge

16800 N.St Fa# 506 over Malad River is a concrete frame carrying 16800 N.St Fa# 506 over Malad River in Box Elder County, Utah. It was built in 1958, so it is 67 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 1,067 vehicles a day, roughly 1% of them trucks, projected to reach 1,280 by 2041. The structure is 44 ft (13.4 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries16800 N.St Fa# 506
CrossesMalad River
Location4800 W. 16800 N. Fielding
RouteCounty Highway 1133
CountyBox Elder County
StateUtah
Coordinates41.81422, -112.13797
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating53.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length44 ft (13.4 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,067 (2021)
Projected traffic1,280 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 16800 N.St Fa# 506 over Malad River built?

It was built in 1958, making it 67 years old in 2025.

What condition is 16800 N.St Fa# 506 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 November 2023.

How much traffic does 16800 N.St Fa# 506 over Malad River carry?

About 1,067 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 16800 N.St Fa# 506 over Malad River?

The structure is 44 ft (13.4 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns 16800 N.St Fa# 506 over Malad River?

It is owned by the County Highway Agency.