US Bridges

Old Gasquet Toll over Eighteen Mile Creek

Poor

Del Norte County, California · 5 MI from Route 199 · Structure no. 01C0032

Built
1970
55 years old
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
23 ft
1 main span
Daily traffic
20
1998 count
Owner
County
County Highway Agency

About this bridge

Old Gasquet Toll over Eighteen Mile Creek is a concrete stringer/multi-beam or girder carrying Old Gasquet Toll over Eighteen Mile Creek in Del Norte County, California. It was built in 1970, so it is 55 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 33 by 2041. The structure is 23 ft (7.1 m) long and 16 ft wide. If it were closed, the detour would be 30.4 mi (49 km).

Location

Open in Google Maps
CarriesOld Gasquet Toll
CrossesEighteen Mile Creek
Location5 MI from Route 199
RouteCounty Highway 0
CountyDel Norte County
StateCalifornia
Coordinates41.8563, -123.91167
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating62.8 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7.1 m)
Longest span22 ft (6.8 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1998)
Projected traffic33 by 2041
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed30.4 mi (49 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$60,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Gasquet Toll over Eighteen Mile Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Old Gasquet Toll over Eighteen Mile 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 2023.

How much traffic does Old Gasquet Toll over Eighteen Mile Creek carry?

About 20 vehicles per day (1998 count).

How long is Old Gasquet Toll over Eighteen Mile Creek?

The structure is 23 ft (7.1 m) long with a longest span of 22 ft (6.8 m) and a deck 16 ft wide.

Who owns Old Gasquet Toll over Eighteen Mile Creek?

It is owned by the County Highway Agency.