US Bridges

SH 119 Ml Nbnd over Left Hand Creek

Fair

Boulder County, Colorado · 3.6 MI NE of JCT SH 52 · Structure no. D-16-N

Built
1959
66 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
143 ft
4 main spans
Daily traffic
14,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 119 Ml Nbnd over Left Hand Creek is a concrete tee beam carrying SH 119 Ml Nbnd over Left Hand Creek in Boulder County, Colorado. It was built in 1959, so it is 66 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 14,000 vehicles a day, roughly 4% of them trucks, projected to reach 15,260 by 2040. The structure is 143 ft (43.6 m) long and 31 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 119 Ml Nbnd
CrossesLeft Hand Creek
Location3.6 MI NE of JCT SH 52
RouteState Highway 119B
Coordinates40.1266, -105.14377
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.8 US tons
Inventory rating41.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans4
Design loadHS 15
Structure length143 ft (43.6 m)
Longest span36 ft (11 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,000 (2020)
Projected traffic15,260 by 2040
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$244,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 119 Ml Nbnd over Left Hand Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is SH 119 Ml Nbnd over Left Hand 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 September 2023.

How much traffic does SH 119 Ml Nbnd over Left Hand Creek carry?

About 14,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 119 Ml Nbnd over Left Hand Creek?

The structure is 143 ft (43.6 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.

Who owns SH 119 Ml Nbnd over Left Hand Creek?

It is owned by the State Highway Agency.