US Bridges

County Road 5 over Sullivan Ditch

Fair

Weld County, Colorado · 100 Ft N of ST HWY 52 · Structure no. ERI005.0-014.0A

Built
1978
47 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
774
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

County Road 5 over Sullivan Ditch is a steel stringer/multi-beam or girder carrying County Road 5 over Sullivan Ditch in Weld County, Colorado. It was built in 1978, so it is 47 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 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 774 vehicles a day, roughly 47% of them trucks, projected to reach 1,099 by 2042. The structure is 23 ft (6.9 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 5
CrossesSullivan Ditch
Location100 Ft N of ST HWY 52
RouteCity Street 0
CountyWeld County
StateColorado
Coordinates40.08755, -105.0177
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span21 ft (6.3 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic774 (2023)
Projected traffic1,099 by 2042
Trucks47%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 5 over Sullivan Ditch built?

It was built in 1978, making it 47 years old in 2025.

What condition is County Road 5 over Sullivan Ditch 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 February 2024.

How much traffic does County Road 5 over Sullivan Ditch carry?

About 774 vehicles per day (2023 count), of which roughly 47% are trucks.

How long is County Road 5 over Sullivan Ditch?

The structure is 23 ft (6.9 m) long with a longest span of 21 ft (6.3 m) and a deck 32 ft wide.

Who owns County Road 5 over Sullivan Ditch?

It is owned by the Town or Township Highway Agency.