US Bridges

SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S

FairPosted for load

Millard County, Utah · North Cove Fort Interchg · Structure no. 0D 745

Built
1966
59 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete Continuous
Length
206 ft
4 main spans
Daily traffic
157
2012 count
Owner
State
State Highway Agency

About this bridge

SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S is a concrete continuous tee beam carrying SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S in Millard County, Utah. It was built in 1966, 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. Its operating status is: posted for load restriction.

It carries about 157 vehicles a day, roughly 27% of them trucks, projected to reach 196 by 2032. The structure is 206 ft (62.9 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSR-161 Int.X-Rd
CrossesI-15 (SR-15) Nbl & S
LocationNorth Cove Fort Interchg
RouteState Highway 161
CountyMillard County
StateUtah
Coordinates38.61583, -112.60917
Functional classRural Major Collector

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 statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length206 ft (62.9 m)
Longest span70 ft (21.2 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic157 (2012)
Projected traffic196 by 2032
Trucks27%
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 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 SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S built?

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

What condition is SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S 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 SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S carry?

About 157 vehicles per day (2012 count), of which roughly 27% are trucks.

How long is SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S?

The structure is 206 ft (62.9 m) long with a longest span of 70 ft (21.2 m) and a deck 30 ft wide.

Who owns SR-161 Int.X-Rd over I-15 (SR-15) Nbl & S?

It is owned by the State Highway Agency.