US Bridges

I-15RAMP to SR-270 over 300 West Street & UP

Fair

Salt Lake County, Utah · 1000 SO.300 West-Slc. · Structure no. 0C 401

Built
1967
58 years old, rebuilt 2017
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
346 ft
5 main spans
Daily traffic
11,490
2012 count
Owner
State
State Highway Agency

About this bridge

I-15RAMP to SR-270 over 300 West Street & UP is a steel stringer/multi-beam or girder carrying I-15RAMP to SR-270 over 300 West Street & UP in Salt Lake County, Utah. It was built in 1967 and reconstructed in 2017, so it is 58 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 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 11,490 vehicles a day, roughly 25% of them trucks, projected to reach 14,363 by 2032. The structure is 346 ft (105.5 m) long and 67 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-15RAMP to SR-270
Crosses300 West Street & UP
Location1000 SO.300 West-Slc.
RouteState Highway 15
CountySalt Lake County
StateUtah
Coordinates40.7475, -111.90073
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans5
Design loadHS 20 + Mod
Structure length346 ft (105.5 m)
Longest span99 ft (30.2 m)
Deck width67 ft (20.3 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic11,490 (2012)
Projected traffic14,363 by 2032
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.1 mi (5 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 I-15RAMP to SR-270 over 300 West Street & UP built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2017.

What condition is I-15RAMP to SR-270 over 300 West Street & UP 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 July 2024.

How much traffic does I-15RAMP to SR-270 over 300 West Street & UP carry?

About 11,490 vehicles per day (2012 count), of which roughly 25% are trucks.

How long is I-15RAMP to SR-270 over 300 West Street & UP?

The structure is 346 ft (105.5 m) long with a longest span of 99 ft (30.2 m) and a deck 67 ft wide.

Who owns I-15RAMP to SR-270 over 300 West Street & UP?

It is owned by the State Highway Agency.