US Bridges

Sma 3723;ROBINSON over Mora Canal

Fair

Canyon County, Idaho · 8.2 S. 3.4 E. Nampa · Structure no. 000000000026755

Built
1984
41 years old
Condition
Fair
inspected February 2023
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
1,200
2023 count
Owner
Local
Other Local Agency

About this bridge

Sma 3723;ROBINSON over Mora Canal is a concrete frame carrying Sma 3723;ROBINSON over Mora Canal in Canyon County, Idaho. It was built in 1984, so it is 41 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 1,200 vehicles a day, projected to reach 1,800 by 2042. The structure is 25 ft (7.6 m) long and 62 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSma 3723;ROBINSON
CrossesMora Canal
Location8.2 S. 3.4 E. Nampa
RouteCounty Highway 3723
CountyCanyon County
StateIdaho
Coordinates43.46019, -116.49367
Functional classRural Major 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.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width62 ft (18.9 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,800 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 Sma 3723;ROBINSON over Mora Canal built?

It was built in 1984, making it 41 years old in 2025.

What condition is Sma 3723;ROBINSON over Mora 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 Sma 3723;ROBINSON over Mora Canal carry?

About 1,200 vehicles per day (2023 count).

How long is Sma 3723;ROBINSON over Mora Canal?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 62 ft wide.

Who owns Sma 3723;ROBINSON over Mora Canal?

It is owned by the Other Local Agency.