US Bridges

Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl

Fair

Beaver County, Utah · Sulphurdale Interchange · Structure no. 0D 750

Built
1966
59 years old, rebuilt 1984
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete Continuous
Length
210 ft
4 main spans
Daily traffic
51
2022 count
Owner
State
State Highway Agency

About this bridge

Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl is a concrete continuous tee beam carrying Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl in Beaver County, Utah. It was built in 1966 and reconstructed in 1984, so it is 59 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 5 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 51 vehicles a day, roughly 25% of them trucks, projected to reach 61 by 2042. The structure is 210 ft (63.9 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCo.Rd.Int. X-Rd
CrossesI-15 (SR-15) Nbl and Sbl
LocationSulphurdale Interchange
RouteCounty Highway 15
CountyBeaver County
StateUtah
Coordinates38.53794, -112.60997
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating11 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length210 ft (63.9 m)
Longest span70 ft (21.4 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic61 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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 Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1984.

What condition is Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl 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 Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl carry?

About 51 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl?

The structure is 210 ft (63.9 m) long with a longest span of 70 ft (21.4 m) and a deck 30 ft wide.

Who owns Co.Rd.Int. X-Rd over I-15 (SR-15) Nbl and Sbl?

It is owned by the State Highway Agency.