US Bridges

County Road 501 over Grimes Creek

Fair

La Plata County, Colorado · 0.2 MI E of N Vallecito · Structure no. 067050118.6006A

Built
1992
33 years old
Condition
Fair
inspected October 2024
Type
Frame
Concrete
Length
34 ft
1 main span
Daily traffic
946
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 501 over Grimes Creek is a concrete frame carrying County Road 501 over Grimes Creek in La Plata County, Colorado. It was built in 1992, so it is 33 years old, younger 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 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 946 vehicles a day, roughly 5% of them trucks, projected to reach 1,117 by 2042. The structure is 34 ft (10.5 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCounty Road 501
CrossesGrimes Creek
Location0.2 MI E of N Vallecito
RouteCounty Highway 0
CountyLa Plata County
StateColorado
Coordinates37.44267, -107.55261
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating74.1 US tons
Inventory rating44.4 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length34 ft (10.5 m)
Longest span33 ft (10 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic946 (2022)
Projected traffic1,117 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 Grimes Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is County Road 501 over Grimes Creek 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 October 2024.

How much traffic does County Road 501 over Grimes Creek carry?

About 946 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is County Road 501 over Grimes Creek?

The structure is 34 ft (10.5 m) long with a longest span of 33 ft (10 m) and a deck 30 ft wide.

Who owns County Road 501 over Grimes Creek?

It is owned by the County Highway Agency.