US Bridges

I 25 Ml Nbnd over Powell Arroyo

Fair

Las Animas County, Colorado · 0.8 MI No of JCT SH 239 · Structure no. P-19-AU

Built
1948
77 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
141 ft
1 main span
Daily traffic
6,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml Nbnd over Powell Arroyo is a steel stringer/multi-beam or girder carrying I 25 Ml Nbnd over Powell Arroyo in Las Animas County, Colorado. It was built in 1948, so it is 77 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 6,000 vehicles a day, roughly 16% of them trucks, projected to reach 7,740 by 2040. The structure is 141 ft (43 m) long and 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 25 Ml Nbnd
CrossesPowell Arroyo
Location0.8 MI No of JCT SH 239
RouteInterstate 25A
Coordinates37.19606, -104.4971
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20
Structure length141 ft (43 m)
Longest span81 ft (24.7 m)
Deck width37 ft (11.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2020)
Projected traffic7,740 by 2040
Trucks16%
Lanes on structure2
Traffic directionOne-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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Ml Nbnd over Powell Arroyo built?

It was built in 1948, making it 77 years old in 2025.

What condition is I 25 Ml Nbnd over Powell Arroyo 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 October 2024.

How much traffic does I 25 Ml Nbnd over Powell Arroyo carry?

About 6,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I 25 Ml Nbnd over Powell Arroyo?

The structure is 141 ft (43 m) long with a longest span of 81 ft (24.7 m) and a deck 37 ft wide.

Who owns I 25 Ml Nbnd over Powell Arroyo?

It is owned by the State Highway Agency.