US Bridges

County Road 4 over Big Dry Creek

Fair

Weld County, Colorado · 0.6 Mi. E. of Co. Rd. 15 · Structure no. WEL004.0_015.0A

Built
2003
22 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
58
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 4 over Big Dry Creek is a steel stringer/multi-beam or girder carrying County Road 4 over Big Dry Creek in Weld County, Colorado. It was built in 2003, so it is 22 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 58 vehicles a day, roughly 38% of them trucks, projected to reach 82 by 2042. The structure is 34 ft (10.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 4
CrossesBig Dry Creek
Location0.6 Mi. E. of Co. Rd. 15
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.01488, -104.91106
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.9 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length34 ft (10.3 m)
Longest span32 ft (9.8 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2022)
Projected traffic82 by 2042
Trucks38%
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 Road 4 over Big Dry Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is County Road 4 over Big Dry 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 June 2024.

How much traffic does County Road 4 over Big Dry Creek carry?

About 58 vehicles per day (2022 count), of which roughly 38% are trucks.

How long is County Road 4 over Big Dry Creek?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.8 m) and a deck 32 ft wide.

Who owns County Road 4 over Big Dry Creek?

It is owned by the County Highway Agency.