US Bridges

SR-71 over Dry Ck. Dimple Delle

Fair

Salt Lake County, Utah · 10100 South 700 East · Structure no. 0F 727

Built
2007
18 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
152 ft
1 main span
Daily traffic
27,079
2021 count
Owner
State
State Highway Agency

About this bridge

SR-71 over Dry Ck. Dimple Delle is a prestressed concrete stringer/multi-beam or girder carrying SR-71 over Dry Ck. Dimple Delle in Salt Lake County, Utah. It was built in 2007, so it is 18 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 27,079 vehicles a day, roughly 16% of them trucks, projected to reach 32,495 by 2041. The structure is 152 ft (46.3 m) long and 97 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR-71
CrossesDry Ck. Dimple Delle
Location10100 South 700 East
RouteState Highway 71
CountySalt Lake County
StateUtah
Coordinates40.56888, -111.87213
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than 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 rating107.1 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length152 ft (46.3 m)
Longest span149 ft (45.4 m)
Deck width97 ft (29.5 m)
Roadway width97 ft (29.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,079 (2021)
Projected traffic32,495 by 2041
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 over Dry Ck. Dimple Delle built?

It was built in 2007, making it 18 years old in 2025.

What condition is SR-71 over Dry Ck. Dimple Delle 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 November 2022.

How much traffic does SR-71 over Dry Ck. Dimple Delle carry?

About 27,079 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is SR-71 over Dry Ck. Dimple Delle?

The structure is 152 ft (46.3 m) long with a longest span of 149 ft (45.4 m) and a deck 97 ft wide.

Who owns SR-71 over Dry Ck. Dimple Delle?

It is owned by the State Highway Agency.