US Bridges

East 1st Street over Local Drainage

Fair

Broomfield County, Colorado · 150 Ft E of Kirk Street · Structure no. BFD-E.1ST-KIRK

Built
1999
26 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
41 ft
2 main spans
Daily traffic
6,265
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

East 1st Street over Local Drainage is a concrete culvert carrying East 1st Street over Local Drainage in Broomfield County, Colorado. It was built in 1999, so it is 26 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 6,265 vehicles a day, roughly 8% of them trucks, projected to reach 7,517 by 2043. The structure is 41 ft (12.4 m) long and 61 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesEast 1st Street
CrossesLocal Drainage
Location150 Ft E of Kirk Street
RouteCity Street 0
CountyBroomfield County
StateColorado
Coordinates39.91506, -105.05941
Functional classUrban Local

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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating108.5 US tons
Inventory rating65.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span20 ft (6 m)
Deck width61 ft (18.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,265 (2023)
Projected traffic7,517 by 2043
Trucks8%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$178,000 (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was East 1st Street over Local Drainage built?

It was built in 1999, making it 26 years old in 2025.

What condition is East 1st Street over Local Drainage 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 East 1st Street over Local Drainage carry?

About 6,265 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is East 1st Street over Local Drainage?

The structure is 41 ft (12.4 m) long with a longest span of 20 ft (6 m) and a deck 61 ft wide.

Who owns East 1st Street over Local Drainage?

It is owned by the City or Municipal Highway Agency.