US Bridges

SH 119 N/Ebnd over Four Mile Creek

Fair

Boulder County, Colorado · In Boulder · Structure no. D-16-I

Built
1958
67 years old, rebuilt 1971
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
109 ft
3 main spans
Daily traffic
4,800
2020 count
Owner
State
State Highway Agency

About this bridge

SH 119 N/Ebnd over Four Mile Creek is a concrete tee beam carrying SH 119 N/Ebnd over Four Mile Creek in Boulder County, Colorado. It was built in 1958 and reconstructed in 1971, 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 4,800 vehicles a day, roughly 4% of them trucks, projected to reach 5,040 by 2040. The structure is 109 ft (33.2 m) long and 60 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 119 N/Ebnd
CrossesFour Mile Creek
LocationIn Boulder
RouteState Highway 119B
Coordinates40.04548, -105.23902
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span36 ft (11 m)
Deck width60 ft (18.3 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2020)
Projected traffic5,040 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 119 N/Ebnd over Four Mile Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1971.

What condition is SH 119 N/Ebnd over Four Mile 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 N/Ebnd over Four Mile Creek carry?

About 4,800 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 119 N/Ebnd over Four Mile Creek?

The structure is 109 ft (33.2 m) long with a longest span of 36 ft (11 m) and a deck 60 ft wide.

Who owns SH 119 N/Ebnd over Four Mile Creek?

It is owned by the State Highway Agency.