US Bridges

Interstate 15 NB over Arrow Route

Fair

San Bernardino County, California · 08-SBD-015-4.61-RCUC · Structure no. 54 0921R

Built
1975
50 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
155 ft
1 main span
Daily traffic
98,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 NB over Arrow Route is a prestressed concrete box beam or girders - multiple carrying Interstate 15 NB over Arrow Route in San Bernardino County, California. It was built in 1975, so it is 50 years old, younger than the California average of 54.8 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.

It carries about 98,000 vehicles a day, roughly 10% of them trucks, projected to reach 136,200 by 2042. The structure is 155 ft (47.2 m) long and 68 ft wide.

Location

Open in Google Maps
CarriesInterstate 15 NB
CrossesArrow Route
Location08-SBD-015-4.61-RCUC
RouteInterstate 15
CountySan Bernardino County
StateCalifornia
Coordinates34.09892, -117.53999
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating50.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span155 ft (47.2 m)
Deck width68 ft (20.7 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98,000 (2020)
Projected traffic136,200 by 2042
Trucks10%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 15 NB over Arrow Route built?

It was built in 1975, making it 50 years old in 2025.

What condition is Interstate 15 NB over Arrow Route 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 March 2023.

How much traffic does Interstate 15 NB over Arrow Route carry?

About 98,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Interstate 15 NB over Arrow Route?

The structure is 155 ft (47.2 m) long with a longest span of 155 ft (47.2 m) and a deck 68 ft wide.

Who owns Interstate 15 NB over Arrow Route?

It is owned by the State Highway Agency.