US Bridges

SB Bluff ST SR-18 over Snow Canyon Parkway

Fair

Washington County, Utah · Bluff Street Interchange · Structure no. 3F 848

Built
2014
11 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
132 ft
1 main span
Daily traffic
—
2023 count
Owner
State
State Highway Agency

About this bridge

SB Bluff ST SR-18 over Snow Canyon Parkway is a prestressed concrete stringer/multi-beam or girder carrying SB Bluff ST SR-18 over Snow Canyon Parkway in Washington County, Utah. It was built in 2014, so it is 11 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.

No traffic count is recorded. The structure is 132 ft (40.1 m) long and 43 ft wide.

CarriesSB Bluff ST SR-18
CrossesSnow Canyon Parkway
LocationBluff Street Interchange
RouteState Highway 18
StateUtah
Coordinates37.13411, -113.60343
Functional classUrban Other Principal 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length132 ft (40.1 m)
Longest span129 ft (39.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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 SB Bluff ST SR-18 over Snow Canyon Parkway built?

It was built in 2014, making it 11 years old in 2025.

What condition is SB Bluff ST SR-18 over Snow Canyon Parkway 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 January 2023.

How much traffic does SB Bluff ST SR-18 over Snow Canyon Parkway carry?

No traffic count is recorded for this structure.

How long is SB Bluff ST SR-18 over Snow Canyon Parkway?

The structure is 132 ft (40.1 m) long with a longest span of 129 ft (39.2 m) and a deck 43 ft wide.

Who owns SB Bluff ST SR-18 over Snow Canyon Parkway?

It is owned by the State Highway Agency.