US Bridges

I 25 Ml over 13th Ave

Fair

Denver County, Colorado · 0.25 MI S of US40 Interch · Structure no. F-16-EC

Built
1956
69 years old, rebuilt 2001
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
173 ft
3 main spans
Daily traffic
235,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over 13th Ave is a concrete continuous tee beam carrying I 25 Ml over 13th Ave in Denver County, Colorado. It was built in 1956 and reconstructed in 2001, so it is 69 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 5 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 235,000 vehicles a day, roughly 6% of them trucks, projected to reach 277,300 by 2040. The structure is 173 ft (52.6 m) long and 223 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesI 25 Ml
Crosses13th Ave
Location0.25 MI S of US40 Interch
RouteInterstate 25A
Coordinates39.73669, -105.01383
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.7 US tons
Inventory rating40 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length173 ft (52.6 m)
Longest span70 ft (21.3 m)
Deck width223 ft (68 m)
Roadway width214 ft (65.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235,000 (2020)
Projected traffic277,300 by 2040
Trucks6%
Lanes on structure13
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 13th Ave built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2001.

What condition is I 25 Ml over 13th Ave 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 13th Ave carry?

About 235,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I 25 Ml over 13th Ave?

The structure is 173 ft (52.6 m) long with a longest span of 70 ft (21.3 m) and a deck 223 ft wide.

Who owns I 25 Ml over 13th Ave?

It is owned by the State Highway Agency.