US Bridges

SH 119 Ml NB over Beasley Ditch

Fair

Boulder County, Colorado · @ 55th ST NE of Boulder · Structure no. D-16-L

Built
1958
67 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
22,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 119 Ml NB over Beasley Ditch is a concrete culvert carrying SH 119 Ml NB over Beasley Ditch in Boulder County, Colorado. It was built in 1958, so it is 67 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 22,000 vehicles a day, roughly 3% of them trucks, projected to reach 25,520 by 2040. The structure is 23 ft (6.9 m) long and 73 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSH 119 Ml NB
CrossesBeasley Ditch
Location@ 55th ST NE of Boulder
RouteState Highway 119B
Coordinates40.05703, -105.22573
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width73 ft (22.4 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2020)
Projected traffic25,520 by 2040
Trucks3%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 119 Ml NB over Beasley Ditch built?

It was built in 1958, making it 67 years old in 2025.

What condition is SH 119 Ml NB over Beasley 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 August 2023.

How much traffic does SH 119 Ml NB over Beasley Ditch carry?

About 22,000 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is SH 119 Ml NB over Beasley Ditch?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m) and a deck 73 ft wide.

Who owns SH 119 Ml NB over Beasley Ditch?

It is owned by the State Highway Agency.