US Bridges

I 25 Ml over 8th Ave

Fair

Denver County, Colorado · In Denver · Structure no. F-16-DX

Built
1958
67 years old, rebuilt 2001
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
154 ft
3 main spans
Daily traffic
228,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over 8th Ave is a steel continuous stringer/multi-beam or girder carrying I 25 Ml over 8th Ave in Denver County, Colorado. It was built in 1958 and reconstructed in 2001, so it is 67 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 228,000 vehicles a day, roughly 6% of them trucks, projected to reach 266,760 by 2040. The structure is 154 ft (46.9 m) long and 194 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesI 25 Ml
Crosses8th Ave
LocationIn Denver
RouteInterstate 25A
CountyDenver County
StateColorado
Coordinates39.72911, -105.01439
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length154 ft (46.9 m)
Longest span75 ft (22.9 m)
Deck width194 ft (59.1 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic228,000 (2020)
Projected traffic266,760 by 2040
Trucks6%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 8th Ave built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2001.

What condition is I 25 Ml over 8th 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 8th Ave carry?

About 228,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I 25 Ml over 8th Ave?

The structure is 154 ft (46.9 m) long with a longest span of 75 ft (22.9 m) and a deck 194 ft wide.

Who owns I 25 Ml over 8th Ave?

It is owned by the State Highway Agency.