US Bridges

Baseline RD over East Twin Creek Channel

Fair

San Bernardino County, California · 0.75 MI E Waterman Ave · Structure no. 54C0214

Built
1961
64 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
28,703
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Baseline RD over East Twin Creek Channel is a concrete tee beam carrying Baseline RD over East Twin Creek Channel in San Bernardino County, California. It was built in 1961, so it is 64 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 28,703 vehicles a day, roughly 3% of them trucks, projected to reach 34,926 by 2046. The structure is 43 ft (13.1 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBaseline RD
CrossesEast Twin Creek Channel
Location0.75 MI E Waterman Ave
RouteCity Street 0
Coordinates34.12122, -117.26558
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20 US tons
Inventory rating13.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width76 ft (23.1 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,703 (2024)
Projected traffic34,926 by 2046
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Baseline RD over East Twin Creek Channel built?

It was built in 1961, making it 64 years old in 2025.

What condition is Baseline RD over East Twin Creek Channel 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 February 2024.

How much traffic does Baseline RD over East Twin Creek Channel carry?

About 28,703 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Baseline RD over East Twin Creek Channel?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 76 ft wide.

Who owns Baseline RD over East Twin Creek Channel?

It is owned by the City or Municipal Highway Agency.