US Bridges

Ledges Int. X-Road over SR-18

Fair

Washington County, Utah · 5 Mi. North of St.George · Structure no. 0F 734

Built
2005
20 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
1,134
2022 count
Owner
State
State Highway Agency

About this bridge

Ledges Int. X-Road over SR-18 is a prestressed concrete stringer/multi-beam or girder carrying Ledges Int. X-Road over SR-18 in Washington County, Utah. It was built in 2005, so it is 20 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 1,134 vehicles a day, roughly 35% of them trucks, projected to reach 1,361 by 2042. The structure is 106 ft (32.3 m) long and 56 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesLedges Int. X-Road
CrossesSR-18
Location5 Mi. North of St.George
RouteCounty Highway 18
CountyWashington County
StateUtah
Coordinates37.19441, -113.62283
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating56.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span103 ft (31.4 m)
Deck width56 ft (17.2 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,134 (2022)
Projected traffic1,361 by 2042
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ledges Int. X-Road over SR-18 built?

It was built in 2005, making it 20 years old in 2025.

What condition is Ledges Int. X-Road over SR-18 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 Ledges Int. X-Road over SR-18 carry?

About 1,134 vehicles per day (2022 count), of which roughly 35% are trucks.

How long is Ledges Int. X-Road over SR-18?

The structure is 106 ft (32.3 m) long with a longest span of 103 ft (31.4 m) and a deck 56 ft wide.

Who owns Ledges Int. X-Road over SR-18?

It is owned by the State Highway Agency.