US Bridges

I 25 Ml over 1st ST

Fair

Pueblo County, Colorado · In Pueblo · Structure no. K-18-CN

Built
1959
66 years old, rebuilt 2019
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
156 ft
4 main spans
Daily traffic
26,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over 1st ST is a concrete continuous tee beam carrying I 25 Ml over 1st ST in Pueblo County, Colorado. It was built in 1959 and reconstructed in 2019, so it is 66 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 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 26,000 vehicles a day, roughly 6% of them trucks, projected to reach 31,720 by 2040. The structure is 156 ft (47.5 m) long and 94 ft wide.

CarriesI 25 Ml
Crosses1st ST
LocationIn Pueblo
RouteInterstate 25A
Coordinates38.26774, -104.60486
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length156 ft (47.5 m)
Longest span45 ft (13.7 m)
Deck width94 ft (28.7 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,000 (2020)
Projected traffic31,720 by 2040
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$287,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Ml over 1st ST built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2019.

What condition is I 25 Ml over 1st ST 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 July 2024.

How much traffic does I 25 Ml over 1st ST carry?

About 26,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I 25 Ml over 1st ST?

The structure is 156 ft (47.5 m) long with a longest span of 45 ft (13.7 m) and a deck 94 ft wide.

Who owns I 25 Ml over 1st ST?

It is owned by the State Highway Agency.