US Bridges

SH 69 over Mason Crk;feeder Canal

Fair

Ada County, Idaho · 5.7 S. Meridian · Structure no. 000000000015130

Built
1990
35 years old
Condition
Fair
inspected February 2023
Type
Frame
Concrete
Length
30 ft
1 main span
Daily traffic
21,000
2023 count
Owner
State
State Highway Agency

About this bridge

SH 69 over Mason Crk;feeder Canal is a concrete frame carrying SH 69 over Mason Crk;feeder Canal in Ada County, Idaho. It was built in 1990, so it is 35 years old, younger than the Idaho average of 45.3 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 21,000 vehicles a day, roughly 3% of them trucks, projected to reach 31,500 by 2042. The structure is 30 ft (9.1 m) long and 127 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSH 69
CrossesMason Crk;feeder Canal
Location5.7 S. Meridian
RouteState Highway 69
CountyAda County
StateIdaho
Coordinates43.52389, -116.39394
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width127 ft (38.7 m)
Roadway width125 ft (38.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,000 (2023)
Projected traffic31,500 by 2042
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 69 over Mason Crk;feeder Canal built?

It was built in 1990, making it 35 years old in 2025.

What condition is SH 69 over Mason Crk;feeder Canal 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 February 2023.

How much traffic does SH 69 over Mason Crk;feeder Canal carry?

About 21,000 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SH 69 over Mason Crk;feeder Canal?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 127 ft wide.

Who owns SH 69 over Mason Crk;feeder Canal?

It is owned by the State Highway Agency.