US Bridges

N15-N395 Connector over Interstate 15

Poor

San Bernardino County, California · 08-SBD-015-31.81 · Structure no. 54 0665G

Built
1964
61 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
368 ft
4 main spans
Daily traffic
26,500
2017 count
Owner
State
State Highway Agency

About this bridge

N15-N395 Connector over Interstate 15 is a steel stringer/multi-beam or girder carrying N15-N395 Connector over Interstate 15 in San Bernardino County, California. It was built in 1964, so it is 61 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 26,500 vehicles a day, roughly 22% of them trucks, projected to reach 36,000 by 2042. The structure is 368 ft (112.2 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesN15-N395 Connector
CrossesInterstate 15
Location08-SBD-015-31.81
RouteInterstate 15
Coordinates34.40044, -117.40128
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length368 ft (112.2 m)
Longest span128 ft (39 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,500 (2017)
Projected traffic36,000 by 2042
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was N15-N395 Connector over Interstate 15 built?

It was built in 1964, making it 61 years old in 2025.

What condition is N15-N395 Connector over Interstate 15 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does N15-N395 Connector over Interstate 15 carry?

About 26,500 vehicles per day (2017 count), of which roughly 22% are trucks.

How long is N15-N395 Connector over Interstate 15?

The structure is 368 ft (112.2 m) long with a longest span of 128 ft (39 m) and a deck 34 ft wide.

Who owns N15-N395 Connector over Interstate 15?

It is owned by the State Highway Agency.