US Bridges

County RD 350 over Cottonwood Creek

Good

Chaffee County, Colorado · 0.5 MI West of SH 24 · Structure no. CHA350-01.70A

Built
2001
24 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
2,180
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 350 over Cottonwood Creek is a steel stringer/multi-beam or girder carrying County RD 350 over Cottonwood Creek in Chaffee County, Colorado. It was built in 2001, so it is 24 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 2,180 vehicles a day, roughly 5% of them trucks, projected to reach 2,660 by 2042. The structure is 32 ft (9.8 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty RD 350
CrossesCottonwood Creek
Location0.5 MI West of SH 24
RouteCounty Highway 0
Coordinates38.84686, -106.14415
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 inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.1 US tons
Inventory rating39 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,180 (2022)
Projected traffic2,660 by 2042
Trucks5%
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 RD 350 over Cottonwood Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is County RD 350 over Cottonwood Creek 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 March 2024.

How much traffic does County RD 350 over Cottonwood Creek carry?

About 2,180 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is County RD 350 over Cottonwood Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns County RD 350 over Cottonwood Creek?

It is owned by the County Highway Agency.