US Bridges

N15-BAKER Bl Offrp over Interstate 15

Fair

San Bernardino County, California · 08-SBD-015-R135.81 · Structure no. 54 0609S

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
307 ft
4 main spans
Daily traffic
4,500
2018 count
Owner
State
State Highway Agency

About this bridge

N15-BAKER Bl Offrp over Interstate 15 is a steel stringer/multi-beam or girder carrying N15-BAKER Bl Offrp over Interstate 15 in San Bernardino County, California. It was built in 1965, so it is 60 years old, older 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 4,500 vehicles a day, roughly 10% of them trucks, projected to reach 5,630 by 2040. The structure is 307 ft (93.6 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesN15-BAKER Bl Offrp
CrossesInterstate 15
Location08-SBD-015-R135.81
RouteInterstate 15
CountySan Bernardino County
StateCalifornia
Coordinates35.25701, -116.084
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating54.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length307 ft (93.6 m)
Longest span109 ft (33.2 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2018)
Projected traffic5,630 by 2040
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 N15-BAKER Bl Offrp over Interstate 15 built?

It was built in 1965, making it 60 years old in 2025.

What condition is N15-BAKER Bl Offrp over Interstate 15 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 2023.

How much traffic does N15-BAKER Bl Offrp over Interstate 15 carry?

About 4,500 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is N15-BAKER Bl Offrp over Interstate 15?

The structure is 307 ft (93.6 m) long with a longest span of 109 ft (33.2 m) and a deck 34 ft wide.

Who owns N15-BAKER Bl Offrp over Interstate 15?

It is owned by the State Highway Agency.