US Bridges

County Road M over Tri-State Canal

Fair

Scotts Bluff County, Nebraska · 7E 2N of Minatare · Structure no. C007942420

Built
1960
65 years old
Condition
Fair
inspected November 2023
Type
Channel Beam
Concrete
Length
46 ft
2 main spans
Daily traffic
30
2003 count
Owner
County
County Highway Agency

About this bridge

County Road M over Tri-State Canal is a concrete channel beam carrying County Road M over Tri-State Canal in Scotts Bluff County, Nebraska. It was built in 1960, so it is 65 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 30 vehicles a day, projected to reach 51 by 2033. The structure is 46 ft (14 m) long and 22 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesCounty Road M
CrossesTri-State Canal
Location7E 2N of Minatare
RouteCounty Highway 424
CountyScotts Bluff County
StateNebraska
Coordinates41.845, -103.3617
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length46 ft (14 m)
Longest span23 ft (7 m)
Deck width22 ft (6.6 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2003)
Projected traffic51 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road M over Tri-State Canal built?

It was built in 1960, making it 65 years old in 2025.

What condition is County Road M over Tri-State 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 November 2023.

How much traffic does County Road M over Tri-State Canal carry?

About 30 vehicles per day (2003 count).

How long is County Road M over Tri-State Canal?

The structure is 46 ft (14 m) long with a longest span of 23 ft (7 m) and a deck 22 ft wide.

Who owns County Road M over Tri-State Canal?

It is owned by the County Highway Agency.