US Bridges

County Road 337A over Rio Blanco River

Good

Archuleta County, Colorado · 0.1 MI S. of SH84 · Structure no. AR337A-S.1-S84A

Built
2015
10 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
196
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 337A over Rio Blanco River is a prestressed concrete box beam or girders - single or spread carrying County Road 337A over Rio Blanco River in Archuleta County, Colorado. It was built in 2015, so it is 10 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 196 vehicles a day, projected to reach 231 by 2042. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesCounty Road 337A
CrossesRio Blanco River
Location0.1 MI S. of SH84
RouteCounty Highway 0
CountyArchuleta County
StateColorado
Coordinates37.15702, -106.94637
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable 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 rating60.4 US tons
Inventory rating41.1 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span55 ft (16.7 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2022)
Projected traffic231 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 337A over Rio Blanco River built?

It was built in 2015, making it 10 years old in 2025.

What condition is County Road 337A over Rio Blanco River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does County Road 337A over Rio Blanco River carry?

About 196 vehicles per day (2022 count).

How long is County Road 337A over Rio Blanco River?

The structure is 60 ft (18.3 m) long with a longest span of 55 ft (16.7 m) and a deck 27 ft wide.

Who owns County Road 337A over Rio Blanco River?

It is owned by the County Highway Agency.