US Bridges

Seventh ST over Novato Creek

Fair

Marin County, California · N of Novato Blvd · Structure no. 27C0092

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
60 ft
3 main spans
Daily traffic
7,729
2009 count
Owner
City
City or Municipal Highway Agency

About this bridge

Seventh ST over Novato Creek is a concrete continuous slab carrying Seventh ST over Novato Creek in Marin County, California. It was built in 1971, so it is 54 years old, younger 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 6 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 7,729 vehicles a day, roughly 10% of them trucks, projected to reach 12,400 by 2046. The structure is 60 ft (18.3 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSeventh ST
CrossesNovato Creek
LocationN of Novato Blvd
RouteCity Street 0
Coordinates38.10684, -122.57844
Functional classUrban Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.7 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span29 ft (8.8 m)
Deck width82 ft (24.9 m)
Roadway width73 ft (22.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,729 (2009)
Projected traffic12,400 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Seventh ST over Novato Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Seventh ST over Novato 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 July 2024.

How much traffic does Seventh ST over Novato Creek carry?

About 7,729 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is Seventh ST over Novato Creek?

The structure is 60 ft (18.3 m) long with a longest span of 29 ft (8.8 m) and a deck 82 ft wide.

Who owns Seventh ST over Novato Creek?

It is owned by the City or Municipal Highway Agency.