US Bridges

I 25 Nbnd over Graneros Creek

Poor

Pueblo County, Colorado · 20.3 Miles North of US 16 · Structure no. M-17-O

Built
1948
77 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
96 ft
3 main spans
Daily traffic
7,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Nbnd over Graneros Creek is a steel stringer/multi-beam or girder carrying I 25 Nbnd over Graneros Creek in Pueblo 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 7,000 vehicles a day, roughly 16% of them trucks, projected to reach 8,890 by 2040. The structure is 96 ft (29.2 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 25 Nbnd
CrossesGraneros Creek
Location20.3 Miles North of US 16
RouteInterstate 25A
Coordinates37.91294, -104.82764
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating38.4 US tons
Inventory rating23 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length96 ft (29.2 m)
Longest span50 ft (15.2 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2020)
Projected traffic8,890 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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$185,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Nbnd over Graneros Creek built?

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

What condition is I 25 Nbnd over Graneros Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does I 25 Nbnd over Graneros Creek carry?

About 7,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I 25 Nbnd over Graneros Creek?

The structure is 96 ft (29.2 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.

Who owns I 25 Nbnd over Graneros Creek?

It is owned by the State Highway Agency.