US Bridges

State Route 128 over Beebe Creek

Fair

Mendocino County, California · 01-MEN-128-38.80 · Structure no. 10 0052

Built
1931
94 years old, rebuilt 1991
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
50 ft
1 main span
Daily traffic
2,050
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 128 over Beebe Creek is a concrete tee beam carrying State Route 128 over Beebe Creek in Mendocino County, California. It was built in 1931 and reconstructed in 1991, so it is 94 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 2,050 vehicles a day, roughly 12% of them trucks, projected to reach 3,163 by 2043. The structure is 50 ft (15.2 m) long and 35 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

CarriesState Route 128
CrossesBeebe Creek
Location01-MEN-128-38.80
RouteState Highway 128
Coordinates38.91408, -123.25671
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
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.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,050 (2009)
Projected traffic3,163 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 128 over Beebe Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1991.

What condition is State Route 128 over Beebe 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 128 over Beebe Creek carry?

About 2,050 vehicles per day (2009 count), of which roughly 12% are trucks.

How long is State Route 128 over Beebe Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 35 ft wide.

Who owns State Route 128 over Beebe Creek?

It is owned by the State Highway Agency.