US Bridges

SR-71 123rd South over Jordan & Salt Lake C

Fair

Salt Lake County, Utah · On 12300 S.Just W.Of I-15 · Structure no. 0E2507

Built
2004
21 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
147 ft
1 main span
Daily traffic
29,560
2014 count
Owner
State
State Highway Agency

About this bridge

SR-71 123rd South over Jordan & Salt Lake C is a concrete culvert carrying SR-71 123rd South over Jordan & Salt Lake C in Salt Lake County, Utah. It was built in 2004, so it is 21 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 29,560 vehicles a day, roughly 27% of them trucks, projected to reach 36,950 by 2034. The structure is 147 ft (44.8 m) long and 147 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR-71 123rd South
CrossesJordan & Salt Lake C
LocationOn 12300 S.Just W.Of I-15
RouteState Highway 71
CountySalt Lake County
StateUtah
Coordinates40.52656, -111.89342
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length147 ft (44.8 m)
Longest span20 ft (6.1 m)
Deck width147 ft (44.7 m)
Roadway width124 ft (37.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,560 (2014)
Projected traffic36,950 by 2034
Trucks27%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 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-71 123rd South over Jordan & Salt Lake C built?

It was built in 2004, making it 21 years old in 2025.

What condition is SR-71 123rd South over Jordan & Salt Lake C 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 December 2024.

How much traffic does SR-71 123rd South over Jordan & Salt Lake C carry?

About 29,560 vehicles per day (2014 count), of which roughly 27% are trucks.

How long is SR-71 123rd South over Jordan & Salt Lake C?

The structure is 147 ft (44.8 m) long with a longest span of 20 ft (6.1 m) and a deck 147 ft wide.

Who owns SR-71 123rd South over Jordan & Salt Lake C?

It is owned by the State Highway Agency.