US Bridges

Hygiene RD (cr 10) over Boulder Feeder Ditch

Good

Boulder County, Colorado · 0.7 Mile East of US Highw · Structure no. BC-10-0.8-ID1

Built
1987
38 years old
Condition
Good
inspected January 2025
Type
Frame
Concrete
Length
29 ft
1 main span
Daily traffic
692
2023 count
Owner
County
County Highway Agency

About this bridge

Hygiene RD (cr 10) over Boulder Feeder Ditch is a concrete frame carrying Hygiene RD (cr 10) over Boulder Feeder Ditch in Boulder County, Colorado. It was built in 1987, so it is 38 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 692 vehicles a day, roughly 5% of them trucks, projected to reach 830 by 2043. The structure is 29 ft (8.8 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHygiene RD (cr 10)
CrossesBoulder Feeder Ditch
Location0.7 Mile East of US Highw
RouteCounty Highway 0
CountyBoulder County
StateColorado
Coordinates40.18888, -105.23884
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.4 US tons
Inventory rating55.4 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deck26 ft (8 m)

Traffic and service

Average daily traffic692 (2023)
Projected traffic830 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hygiene RD (cr 10) over Boulder Feeder Ditch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Hygiene RD (cr 10) over Boulder Feeder Ditch 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 January 2025.

How much traffic does Hygiene RD (cr 10) over Boulder Feeder Ditch carry?

About 692 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Hygiene RD (cr 10) over Boulder Feeder Ditch?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 40 ft wide.

Who owns Hygiene RD (cr 10) over Boulder Feeder Ditch?

It is owned by the County Highway Agency.