US Bridges

I 25 Ml over Storm Drainage

Fair

Denver County, Colorado · 0.1 Mi. N. of 20th St. · Structure no. E-16-PI

Built
1993
32 years old
Condition
Fair
inspected March 2022
Type
Culvert
Concrete
Length
58 ft
3 main spans
Daily traffic
242,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over Storm Drainage is a concrete culvert carrying I 25 Ml over Storm Drainage in Denver County, Colorado. It was built in 1993, so it is 32 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 242,000 vehicles a day, roughly 9% of them trucks, projected to reach 278,300 by 2040. The structure is 58 ft (17.7 m) long and 288 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 25 Ml
CrossesStorm Drainage
Location0.1 Mi. N. of 20th St.
RouteInterstate 25A
Coordinates39.76199, -105.00287
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 inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span18 ft (5.5 m)
Deck width288 ft (87.8 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic242,000 (2020)
Projected traffic278,300 by 2040
Trucks9%
Lanes on structure14
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Storm Drainage built?

It was built in 1993, making it 32 years old in 2025.

What condition is I 25 Ml over Storm 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 March 2022.

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

About 242,000 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is I 25 Ml over Storm Drainage?

The structure is 58 ft (17.7 m) long with a longest span of 18 ft (5.5 m) and a deck 288 ft wide.

Who owns I 25 Ml over Storm Drainage?

It is owned by the State Highway Agency.