US Bridges

W10 On-Ramp over San Timoteo Creek

Fair

San Bernardino County, California · 08-SBD-010-25.46-SBD · Structure no. 54 1105K

Built
1993
32 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
8,500
2019 count
Owner
State
State Highway Agency

About this bridge

W10 On-Ramp over San Timoteo Creek is a prestressed concrete slab carrying W10 On-Ramp over San Timoteo Creek in San Bernardino County, California. It was built in 1993, so it is 32 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 8,500 vehicles a day, roughly 1% of them trucks, projected to reach 11,000 by 2041. The structure is 64 ft (19.5 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW10 On-Ramp
CrossesSan Timoteo Creek
Location08-SBD-010-25.46-SBD
RouteInterstate 10
CountySan Bernardino County
StateCalifornia
Coordinates34.06464, -117.27557
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length64 ft (19.5 m)
Longest span62 ft (18.9 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2019)
Projected traffic11,000 by 2041
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was W10 On-Ramp over San Timoteo Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is W10 On-Ramp over San Timoteo Creek 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 W10 On-Ramp over San Timoteo Creek carry?

About 8,500 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is W10 On-Ramp over San Timoteo Creek?

The structure is 64 ft (19.5 m) long with a longest span of 62 ft (18.9 m) and a deck 39 ft wide.

Who owns W10 On-Ramp over San Timoteo Creek?

It is owned by the State Highway Agency.