US Bridges

Meadow Way over San Anselmo Creek

PoorPosted for load

Marin County, California · 0.1 MI SE of Cascade DR · Structure no. 27C0008

Built
1950
75 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
2 main spans
Daily traffic
55
1981 count
Owner
City
City or Municipal Highway Agency

About this bridge

Meadow Way over San Anselmo Creek is a steel stringer/multi-beam or girder carrying Meadow Way over San Anselmo Creek in Marin County, California. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 55 vehicles a day, projected to reach 111 by 2046. The structure is 70 ft (21.3 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMeadow Way
CrossesSan Anselmo Creek
Location0.1 MI SE of Cascade DR
RouteCity Street 0
Coordinates37.97599, -122.60014
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating20.4 US tons
Inventory rating14.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans2 (+4 approach)
Design loadUnknown
Structure length70 ft (21.3 m)
Longest span23 ft (7 m)
Deck width14 ft (4.3 m)
Roadway width10 ft (3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (1981)
Projected traffic111 by 2046
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$355,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Meadow Way over San Anselmo Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Meadow Way over San Anselmo 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 September 2024.

How much traffic does Meadow Way over San Anselmo Creek carry?

About 55 vehicles per day (1981 count).

How long is Meadow Way over San Anselmo Creek?

The structure is 70 ft (21.3 m) long with a longest span of 23 ft (7 m) and a deck 14 ft wide.

Who owns Meadow Way over San Anselmo Creek?

It is owned by the City or Municipal Highway Agency.