US Bridges

Airport Road over Lykins Gulch

Fair

Boulder County, Colorado · 500 Ft N of Rogers Road · Structure no. LONG-AIRRD-ROGR

Built
2006
19 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
59 ft
4 main spans
Daily traffic
13,906
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Airport Road over Lykins Gulch is a concrete culvert carrying Airport Road over Lykins Gulch in Boulder County, Colorado. It was built in 2006, so it is 19 years old, younger 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 13,906 vehicles a day, roughly 5% of them trucks, projected to reach 16,687 by 2043. The structure is 59 ft (17.9 m) long and 96 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAirport Road
CrossesLykins Gulch
Location500 Ft N of Rogers Road
RouteCity Street 0
CountyBoulder County
StateColorado
Coordinates40.15972, -105.15458
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.2 US tons
Inventory rating63.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length59 ft (17.9 m)
Longest span15 ft (4.5 m)
Deck width96 ft (29.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,906 (2023)
Projected traffic16,687 by 2043
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Airport Road over Lykins Gulch built?

It was built in 2006, making it 19 years old in 2025.

What condition is Airport Road over Lykins Gulch 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 January 2025.

How much traffic does Airport Road over Lykins Gulch carry?

About 13,906 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Airport Road over Lykins Gulch?

The structure is 59 ft (17.9 m) long with a longest span of 15 ft (4.5 m) and a deck 96 ft wide.

Who owns Airport Road over Lykins Gulch?

It is owned by the City or Municipal Highway Agency.