County Road 8 over Big Sandy Creek

Fair

Cheyenne County, Colorado · 0.5 MI S of SH40/287 · Structure no. CY8-S0.4-S40A

Built: 1989; 36 years old
Condition: Fair; inspected December 2023
Type: Tee Beam; Prestressed Concrete
Length: 249 ft; 4 main spans
Daily traffic: 18; 2022 count
Owner: County; County Highway Agency

About this bridge

County Road 8 over Big Sandy Creek is a prestressed concrete tee beam carrying County Road 8 over Big Sandy Creek in Cheyenne County, Colorado. It was built in 1989, so it is 36 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 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 18 vehicles a day, projected to reach 22 by 2042. The structure is 249 ft (75.9 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesCounty Road 8

CrossesBig Sandy Creek

Location0.5 MI S of SH40/287

RouteCounty Highway 0

CountyCheyenne County

StateColorado

Coordinates38.82114, -103.01403

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionDecember 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation6: Equal to present minimum criteria

Deck geometry8: Equal to present desirable criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating61.1 US tons

Inventory rating36.6 US tons

Structure

Structure typeTee Beam

MaterialPrestressed Concrete

DeckConcrete, cast-in-place

Main spans4

Design loadHS 20

Structure length249 ft (75.9 m)

Longest span60 ft (18.4 m)

Deck width34 ft (10.5 m)

Roadway width32 ft (9.8 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18 (2022)

Projected traffic22 by 2042

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed14.9 mi (24 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 8 over Big Sandy Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is County Road 8 over Big Sandy 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 December 2023.

How much traffic does County Road 8 over Big Sandy Creek carry?

About 18 vehicles per day (2022 count).

How long is County Road 8 over Big Sandy Creek?

The structure is 249 ft (75.9 m) long with a longest span of 60 ft (18.4 m) and a deck 34 ft wide.

Who owns County Road 8 over Big Sandy Creek?

It is owned by the County Highway Agency.