US Bridges

Chapman Street over Hoppow Creek

Poor

Del Norte County, California · West of Route 101/169 Sep · Structure no. 01C0002

Built
1965
60 years old
Condition
Poor
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
102 ft
1 main span
Daily traffic
20
2004 count
Owner
County
County Highway Agency

About this bridge

Chapman Street over Hoppow Creek is a prestressed concrete tee beam carrying Chapman Street 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 20 vehicles a day, projected to reach 53 by 2042. The structure is 102 ft (31 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesChapman Street
CrossesHoppow Creek
LocationWest of Route 101/169 Sep
RouteCounty Highway 0
Coordinates41.52368, -124.03565
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length102 ft (31 m)
Longest span49 ft (15 m)
Deck width40 ft (12.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2004)
Projected traffic53 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$640,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Chapman Street over Hoppow Creek built?

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

What condition is Chapman Street over Hoppow Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Chapman Street over Hoppow Creek carry?

About 20 vehicles per day (2004 count).

How long is Chapman Street over Hoppow Creek?

The structure is 102 ft (31 m) long with a longest span of 49 ft (15 m) and a deck 40 ft wide.

Who owns Chapman Street over Hoppow Creek?

It is owned by the County Highway Agency.