US Bridges

State Route 253 over Robinson Creek

Fair

Mendocino County, California · 01-MEN-253-15.06 · Structure no. 10 0231

Built
1962
63 years old, rebuilt 1991
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
135 ft
3 main spans
Daily traffic
2,300
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 253 over Robinson Creek is a concrete continuous tee beam carrying State Route 253 over Robinson Creek in Mendocino County, California. It was built in 1962 and reconstructed in 1991, so it is 63 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 2,300 vehicles a day, roughly 14% of them trucks, projected to reach 3,367 by 2043. The structure is 135 ft (41.1 m) long and 35 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesState Route 253
CrossesRobinson Creek
Location01-MEN-253-15.06
RouteState Highway 253
CountyMendocino County
StateCalifornia
Coordinates39.09134, -123.22049
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span60 ft (18.3 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2009)
Projected traffic3,367 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemNo

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 State Route 253 over Robinson Creek built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1991.

What condition is State Route 253 over Robinson 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 State Route 253 over Robinson Creek carry?

About 2,300 vehicles per day (2009 count), of which roughly 14% are trucks.

How long is State Route 253 over Robinson Creek?

The structure is 135 ft (41.1 m) long with a longest span of 60 ft (18.3 m) and a deck 35 ft wide.

Who owns State Route 253 over Robinson Creek?

It is owned by the State Highway Agency.