US Bridges

US Highway 101 NB over Hensley CR Hensley CR RD

Good

Mendocino County, California · 01-MEN-101-27.00 · Structure no. 10 0200R

Built
1962
63 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
204 ft
5 main spans
Daily traffic
13,750
2009 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over Hensley CR Hensley CR RD is a concrete continuous tee beam carrying US Highway 101 NB over Hensley CR Hensley CR RD in Mendocino County, California. It was built in 1962, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 13,750 vehicles a day, roughly 11% of them trucks, projected to reach 23,107 by 2042. The structure is 204 ft (62.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Highway 101 NB
CrossesHensley CR Hensley CR RD
Location01-MEN-101-27.00
RouteU.S. Route 101
Coordinates39.18533, -123.21149
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length204 ft (62.2 m)
Longest span46 ft (14 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,750 (2009)
Projected traffic23,107 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 US Highway 101 NB over Hensley CR Hensley CR RD built?

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

What condition is US Highway 101 NB over Hensley CR Hensley CR RD in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does US Highway 101 NB over Hensley CR Hensley CR RD carry?

About 13,750 vehicles per day (2009 count), of which roughly 11% are trucks.

How long is US Highway 101 NB over Hensley CR Hensley CR RD?

The structure is 204 ft (62.2 m) long with a longest span of 46 ft (14 m) and a deck 40 ft wide.

Who owns US Highway 101 NB over Hensley CR Hensley CR RD?

It is owned by the State Highway Agency.