US Bridges

Mississippi Ave over I 225 Ml

Fair

Arapahoe County, Colorado · In Aurora · Structure no. F-17-KL

Built
1997
28 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
272 ft
2 main spans
Daily traffic
50,968
2024 count
Owner
State
State Highway Agency

About this bridge

Mississippi Ave over I 225 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying Mississippi Ave over I 225 Ml in Arapahoe County, Colorado. It was built in 1997, so it is 28 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 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 50,968 vehicles a day, roughly 7% of them trucks, projected to reach 62,181 by 2044. The structure is 272 ft (82.8 m) long and 141 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMississippi Ave
CrossesI 225 Ml
LocationIn Aurora
RouteCity Street 0
CountyArapahoe County
StateColorado
Coordinates39.69649, -104.82969
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
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 rating65.5 US tons
Inventory rating40.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length272 ft (82.8 m)
Longest span135 ft (41 m)
Deck width141 ft (43 m)
Roadway width114 ft (34.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,968 (2024)
Projected traffic62,181 by 2044
Trucks7%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mississippi Ave over I 225 Ml built?

It was built in 1997, making it 28 years old in 2025.

What condition is Mississippi Ave over I 225 Ml 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 2023.

How much traffic does Mississippi Ave over I 225 Ml carry?

About 50,968 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Mississippi Ave over I 225 Ml?

The structure is 272 ft (82.8 m) long with a longest span of 135 ft (41 m) and a deck 141 ft wide.

Who owns Mississippi Ave over I 225 Ml?

It is owned by the State Highway Agency.