US Bridges

I 25 Ml over Drainage Ditch

Fair

Denver County, Colorado · Just NW of I25 and Santa · Structure no. F-16-XT

Built
2016
9 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
50 ft
3 main spans
Daily traffic
27,000
2018 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over Drainage Ditch is a concrete culvert carrying I 25 Ml over Drainage Ditch in Denver County, Colorado. It was built in 2016, so it is 9 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 27,000 vehicles a day, roughly 6% of them trucks, projected to reach 243,000 by 2036. The structure is 50 ft (15.1 m) long and 492 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 25 Ml
CrossesDrainage Ditch
LocationJust NW of I25 and Santa
RouteInterstate 25A
Coordinates39.70886, -104.99691
Functional classUrban Principal Arterial - Interstate

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating51.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length50 ft (15.1 m)
Longest span16 ft (4.9 m)
Deck width492 ft (150 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,000 (2018)
Projected traffic243,000 by 2036
Trucks6%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 25 Ml over Drainage Ditch built?

It was built in 2016, making it 9 years old in 2025.

What condition is I 25 Ml over Drainage 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 June 2024.

How much traffic does I 25 Ml over Drainage Ditch carry?

About 27,000 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is I 25 Ml over Drainage Ditch?

The structure is 50 ft (15.1 m) long with a longest span of 16 ft (4.9 m) and a deck 492 ft wide.

Who owns I 25 Ml over Drainage Ditch?

It is owned by the State Highway Agency.