US Bridges

CO RD (calls Fort) over I-15 (SR-15) NB and SB

Fair

Box Elder County, Utah · 3.5 MI No Brigham Intch · Structure no. 0F 3

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
219 ft
4 main spans
Daily traffic
125
2023 count
Owner
State
State Highway Agency

About this bridge

CO RD (calls Fort) over I-15 (SR-15) NB and SB is a prestressed concrete stringer/multi-beam or girder carrying CO RD (calls Fort) over I-15 (SR-15) NB and SB in Box Elder County, Utah. It was built in 1963, so it is 62 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 125 vehicles a day, roughly 23% of them trucks, projected to reach 150 by 2043. The structure is 219 ft (66.6 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCO RD (calls Fort)
CrossesI-15 (SR-15) NB and SB
Location3.5 MI No Brigham Intch
RouteCounty Highway 1117
CountyBox Elder County
StateUtah
Coordinates41.60592, -112.08161
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.9 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length219 ft (66.6 m)
Longest span72 ft (21.8 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic150 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 CO RD (calls Fort) over I-15 (SR-15) NB and SB built?

It was built in 1963, making it 62 years old in 2025.

What condition is CO RD (calls Fort) over I-15 (SR-15) NB and SB 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 May 2023.

How much traffic does CO RD (calls Fort) over I-15 (SR-15) NB and SB carry?

About 125 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is CO RD (calls Fort) over I-15 (SR-15) NB and SB?

The structure is 219 ft (66.6 m) long with a longest span of 72 ft (21.8 m) and a deck 29 ft wide.

Who owns CO RD (calls Fort) over I-15 (SR-15) NB and SB?

It is owned by the State Highway Agency.