US Bridges

Thorsson Court over Novato Creek

Good

Marin County, California · 0.1 MI S of Novato Blvd · Structure no. 27C0166

Built
2000
25 years old
Condition
Good
inspected August 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
1 main span
Daily traffic
50
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thorsson Court over Novato Creek is a steel stringer/multi-beam or girder carrying Thorsson Court over Novato Creek in Marin County, California. It was built in 2000, so it is 25 years old, younger 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 74 by 2043. The structure is 83 ft (25.2 m) long and 29 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

CarriesThorsson Court
CrossesNovato Creek
Location0.1 MI S of Novato Blvd
RouteCity Street 0
Coordinates38.1155, -122.60567
Functional classUrban Local

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 inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating60 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length83 ft (25.2 m)
Longest span80 ft (24.4 m)
Deck width29 ft (8.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2017)
Projected traffic74 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed61.5 mi (99 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Thorsson Court over Novato Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Thorsson Court over Novato Creek 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 August 2021.

How much traffic does Thorsson Court over Novato Creek carry?

About 50 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Thorsson Court over Novato Creek?

The structure is 83 ft (25.2 m) long with a longest span of 80 ft (24.4 m) and a deck 29 ft wide.

Who owns Thorsson Court over Novato Creek?

It is owned by the City or Municipal Highway Agency.