US Bridges

Stc 3725;MISSOURI over Mora Canal

Fair

Canyon County, Idaho · 6.2S 4.1W Nampa City Ctr · Structure no. 000000000027260

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

About this bridge

Stc 3725;MISSOURI over Mora Canal is a prestressed concrete tee beam carrying Stc 3725;MISSOURI 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, roughly 3% of them trucks, projected to reach 1,800 by 2042. The structure is 31 ft (9.4 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesStc 3725;MISSOURI
CrossesMora Canal
Location6.2S 4.1W Nampa City Ctr
RouteCounty Highway 3725
CountyCanyon County
StateIdaho
Coordinates43.48833, -116.64403
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width49 ft (14.8 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,800 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Stc 3725;MISSOURI over Mora Canal built?

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

What condition is Stc 3725;MISSOURI 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 Stc 3725;MISSOURI over Mora Canal carry?

About 1,200 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Stc 3725;MISSOURI over Mora Canal?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 49 ft wide.

Who owns Stc 3725;MISSOURI over Mora Canal?

It is owned by the Other Local Agency.