US Bridges

S101-CHAPMAN ST Rp over Hoppow Creek

Fair

Del Norte County, California · 01-DN-101-R4.76 · Structure no. 01 0026K

Built
1965
60 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
320
2011 count
Owner
State
State Highway Agency

About this bridge

S101-CHAPMAN ST Rp over Hoppow Creek is a concrete continuous slab carrying S101-CHAPMAN ST Rp over Hoppow Creek in Del Norte County, California. It was built in 1965, so it is 60 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 320 vehicles a day, roughly 10% of them trucks, projected to reach 861 by 2043. The structure is 91 ft (27.7 m) long and 26 ft wide.

CarriesS101-CHAPMAN ST Rp
CrossesHoppow Creek
Location01-DN-101-R4.76
RouteU.S. Route 101
Coordinates41.52329, -124.0349
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionAugust 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length91 ft (27.7 m)
Longest span34 ft (10.4 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2011)
Projected traffic861 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 S101-CHAPMAN ST Rp over Hoppow Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is S101-CHAPMAN ST Rp over Hoppow 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 August 2023.

How much traffic does S101-CHAPMAN ST Rp over Hoppow Creek carry?

About 320 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is S101-CHAPMAN ST Rp over Hoppow Creek?

The structure is 91 ft (27.7 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.

Who owns S101-CHAPMAN ST Rp over Hoppow Creek?

It is owned by the State Highway Agency.