US Bridges

County Road 90 over Coalbank Creek

Fair

Weld County, Colorado · 0.3 MI E of CO RD 23 · Structure no. WEL090.0-023.0A

Built
1980
45 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 90 over Coalbank Creek is a steel stringer/multi-beam or girder carrying County Road 90 over Coalbank Creek in Weld County, Colorado. It was built in 1980, so it is 45 years old, older 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 150 vehicles a day, roughly 37% of them trucks, projected to reach 214 by 2043. The structure is 39 ft (11.8 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Road 90
CrossesCoalbank Creek
Location0.3 MI E of CO RD 23
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.63983, -104.84263
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.7 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length39 ft (11.8 m)
Longest span36 ft (11.1 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic214 by 2043
Trucks37%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 90 over Coalbank Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is County Road 90 over Coalbank 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 April 2024.

How much traffic does County Road 90 over Coalbank Creek carry?

About 150 vehicles per day (2023 count), of which roughly 37% are trucks.

How long is County Road 90 over Coalbank Creek?

The structure is 39 ft (11.8 m) long with a longest span of 36 ft (11.1 m) and a deck 32 ft wide.

Who owns County Road 90 over Coalbank Creek?

It is owned by the County Highway Agency.