US Bridges

Riverside Drive over Middleton Wash

Fair

Washington County, Utah · East Side of St. George · Structure no. 053017E

Built
1999
26 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
59 ft
5 main spans
Daily traffic
11,466
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Riverside Drive over Middleton Wash is a concrete culvert carrying Riverside Drive over Middleton Wash in Washington County, Utah. It was built in 1999, so it is 26 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 11,466 vehicles a day, roughly 20% of them trucks, projected to reach 13,931 by 2030. The structure is 59 ft (18 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRiverside Drive
CrossesMiddleton Wash
LocationEast Side of St. George
RouteCity Street 3204
CountyWashington County
StateUtah
Coordinates37.09794, -113.54077
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20 + Mod
Structure length59 ft (18 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic11,466 (2010)
Projected traffic13,931 by 2030
Trucks20%
Lanes on structure2
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 Middleton Wash built?

It was built in 1999, making it 26 years old in 2025.

What condition is Riverside Drive over Middleton 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 Middleton Wash carry?

About 11,466 vehicles per day (2010 count), of which roughly 20% are trucks.

How long is Riverside Drive over Middleton Wash?

The structure is 59 ft (18 m) long with a longest span of 11 ft (3.4 m).

Who owns Riverside Drive over Middleton Wash?

It is owned by the City or Municipal Highway Agency.