US Bridges

County Road 501 over Vallecito Crk Diversion

Good

La Plata County, Colorado · 0.3 MI E of N Vallecito · Structure no. 067050118.7007A

Built
1995
30 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
749
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 501 over Vallecito Crk Diversion is a prestressed concrete slab carrying County Road 501 over Vallecito Crk Diversion in La Plata County, Colorado. It was built in 1995, so it is 30 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 749 vehicles a day, roughly 5% of them trucks, projected to reach 884 by 2042. The structure is 37 ft (11.3 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCounty Road 501
CrossesVallecito Crk Diversion
Location0.3 MI E of N Vallecito
RouteCounty Highway 0
Coordinates37.44261, -107.55104
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal 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 alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating37.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length37 ft (11.3 m)
Longest span34 ft (10.5 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic749 (2022)
Projected traffic884 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 501 over Vallecito Crk Diversion built?

It was built in 1995, making it 30 years old in 2025.

What condition is County Road 501 over Vallecito Crk Diversion 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 501 over Vallecito Crk Diversion carry?

About 749 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is County Road 501 over Vallecito Crk Diversion?

The structure is 37 ft (11.3 m) long with a longest span of 34 ft (10.5 m) and a deck 30 ft wide.

Who owns County Road 501 over Vallecito Crk Diversion?

It is owned by the County Highway Agency.