SR-21 over Milford-Nevada Wash

Fair

Beaver County, Utah · 4.2 Miles West of Milford · Structure no. 0D 510

Built: 1947; 78 years old
Condition: Fair; inspected February 2023
Type: Frame; Concrete
Length: 65 ft; 1 main span
Daily traffic: 329; 2022 count
Owner: State; State Highway Agency

About this bridge

SR-21 over Milford-Nevada Wash is a concrete frame carrying SR-21 over Milford-Nevada Wash in Beaver County, Utah. It was built in 1947, so it is 78 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 329 vehicles a day, roughly 41% of them trucks, projected to reach 395 by 2042. The structure is 65 ft (19.9 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps

CarriesSR-21

CrossesMilford-Nevada Wash

Location4.2 Miles West of Milford

RouteState Highway 21

CountyBeaver County

StateUtah

Coordinates38.41654, -113.08485

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	9 Excellent	No problems noted.

Last inspectionFebruary 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating53.6 US tons

Inventory rating36 US tons

Structure

Structure typeFrame

MaterialConcrete

DeckConcrete, cast-in-place

Main spans1

Design loadH 15

Structure length65 ft (19.9 m)

Longest span28 ft (8.6 m)

Deck width30 ft (9 m)

Roadway width24 ft (7.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic329 (2022)

Projected traffic395 by 2042

Trucks41%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed123.7 mi (199 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-21 over Milford-Nevada Wash built?

It was built in 1947, making it 78 years old in 2025.

What condition is SR-21 over Milford-Nevada Wash 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 February 2023.

How much traffic does SR-21 over Milford-Nevada Wash carry?

About 329 vehicles per day (2022 count), of which roughly 41% are trucks.

How long is SR-21 over Milford-Nevada Wash?

The structure is 65 ft (19.9 m) long with a longest span of 28 ft (8.6 m) and a deck 30 ft wide.

Who owns SR-21 over Milford-Nevada Wash?

It is owned by the State Highway Agency.