US Bridges

County Road 30 over Rio Grande Canal

Fair

Rio Grande County, Colorado · .2 MI N of SH 374 · Structure no. RGDW08-07.80N

Built
1966
59 years old, rebuilt 2015
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
48
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 30 over Rio Grande Canal is a steel stringer/multi-beam or girder carrying County Road 30 over Rio Grande Canal in Rio Grande County, Colorado. It was built in 1966 and reconstructed in 2015, so it is 59 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 48 vehicles a day, projected to reach 56 by 2042. The structure is 41 ft (12.4 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 30
CrossesRio Grande Canal
Location.2 MI N of SH 374
RouteCounty Highway 0
CountyRio Grande County
StateColorado
Coordinates37.68841, -106.29586
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
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.4 US tons
Inventory rating19.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length41 ft (12.4 m)
Longest span37 ft (11.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2022)
Projected traffic56 by 2042
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 30 over Rio Grande Canal built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2015.

What condition is County Road 30 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 30 over Rio Grande Canal carry?

About 48 vehicles per day (2022 count).

How long is County Road 30 over Rio Grande Canal?

The structure is 41 ft (12.4 m) long with a longest span of 37 ft (11.4 m) and a deck 24 ft wide.

Who owns County Road 30 over Rio Grande Canal?

It is owned by the County Highway Agency.