US Bridges

County Road 7N over Rio Grande Canal

Fair

Rio Grande County, Colorado · 5.9 MI E of Del Norte · Structure no. RGDN07-05.10W

Built
1956
69 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
88 ft
2 main spans
Daily traffic
487
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 7N over Rio Grande Canal is a concrete continuous slab carrying County Road 7N over Rio Grande Canal in Rio Grande County, Colorado. It was built in 1956, so it is 69 years old, older than the Colorado average of 42.2 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 487 vehicles a day, roughly 2% of them trucks, projected to reach 565 by 2042. The structure is 88 ft (26.8 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCounty Road 7N
CrossesRio Grande Canal
Location5.9 MI E of Del Norte
RouteCounty Highway 0
CountyRio Grande County
StateColorado
Coordinates37.67568, -106.24204
Functional classRural Minor 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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.8 US tons
Inventory rating29.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length88 ft (26.8 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic487 (2022)
Projected traffic565 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road 7N over Rio Grande Canal built?

It was built in 1956, making it 69 years old in 2025.

What condition is County Road 7N over Rio Grande 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 December 2024.

How much traffic does County Road 7N over Rio Grande Canal carry?

About 487 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 7N over Rio Grande Canal?

The structure is 88 ft (26.8 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns County Road 7N over Rio Grande Canal?

It is owned by the County Highway Agency.