US Bridges

Riverside Drive over Rim Rock Wash

Fair

Washington County, Utah · Riverside Dr.In St.George · Structure no. 053067D

Built
2008
17 years old
Condition
Fair
inspected February 2024
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
500
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Riverside Drive over Rim Rock Wash is a concrete frame carrying Riverside Drive over Rim Rock Wash in Washington County, Utah. It was built in 2008, so it is 17 years old, younger 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 500 vehicles a day, roughly 1% of them trucks, projected to reach 700 by 2030. The structure is 22 ft (6.7 m) long and 99 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRiverside Drive
CrossesRim Rock Wash
LocationRiverside Dr.In St.George
RouteCity Street 0
CountyWashington County
StateUtah
Coordinates37.08806, -113.55417
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width99 ft (30.3 m)
Roadway width68 ft (20.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2010)
Projected traffic700 by 2030
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Riverside Drive over Rim Rock Wash built?

It was built in 2008, making it 17 years old in 2025.

What condition is Riverside Drive over Rim Rock 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 2024.

How much traffic does Riverside Drive over Rim Rock Wash carry?

About 500 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Riverside Drive over Rim Rock Wash?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 99 ft wide.

Who owns Riverside Drive over Rim Rock Wash?

It is owned by the City or Municipal Highway Agency.