US Bridges

Mason Street over Quartermaster Reach

Good

San Francisco County, California · Just East of Intersection · Structure no. T-BD-00001

Built
2021
4 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
70 ft
2 main spans
Daily traffic
1,500
2024 count
Owner
Unknown

About this bridge

Mason Street over Quartermaster Reach is a concrete culvert carrying Mason Street over Quartermaster Reach in San Francisco County, California. It was built in 2021, so it is 4 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 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 2,000 by 2044. The structure is 70 ft (21.3 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMason Street
CrossesQuartermaster Reach
LocationJust East of Intersection
RouteCity Street 0
Coordinates37.80428, -122.45387
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span34 ft (10.4 m)
Deck width70 ft (21.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2024)
Projected traffic2,000 by 2044
Trucks5%
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

OwnerNot reported
Maintained byNot reported
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 Mason Street over Quartermaster Reach built?

It was built in 2021, making it 4 years old in 2025.

What condition is Mason Street over Quartermaster Reach 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 October 2024.

How much traffic does Mason Street over Quartermaster Reach carry?

About 1,500 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mason Street over Quartermaster Reach?

The structure is 70 ft (21.3 m) long with a longest span of 34 ft (10.4 m) and a deck 70 ft wide.

Who owns Mason Street over Quartermaster Reach?

It is owned by the owner is not reported.