US Bridges

I 25 Ml over W. Myrtle Pl. / RR

Fair

Denver County, Colorado · Just N. of 13th Ave · Structure no. F-16-DC

Built
1956
69 years old, rebuilt 1991
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
139 ft
3 main spans
Daily traffic
235,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over W. Myrtle Pl. / RR is a concrete continuous tee beam carrying I 25 Ml over W. Myrtle Pl. / RR in Denver County, Colorado. It was built in 1956 and reconstructed in 1991, so it is 69 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 235,000 vehicles a day, roughly 6% of them trucks, projected to reach 277,300 by 2040. The structure is 139 ft (42.4 m) long and 221 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesI 25 Ml
CrossesW. Myrtle Pl. / RR
LocationJust N. of 13th Ave
RouteInterstate 25A
Coordinates39.73745, -105.01366
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.1 US tons
Inventory rating19.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length139 ft (42.4 m)
Longest span57 ft (17.4 m)
Deck width221 ft (67.4 m)
Roadway width217 ft (66.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235,000 (2020)
Projected traffic277,300 by 2040
Trucks6%
Lanes on structure13
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.1 mi (5 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$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Ml over W. Myrtle Pl. / RR built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1991.

What condition is I 25 Ml over W. Myrtle Pl. / RR 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 W. Myrtle Pl. / RR carry?

About 235,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I 25 Ml over W. Myrtle Pl. / RR?

The structure is 139 ft (42.4 m) long with a longest span of 57 ft (17.4 m) and a deck 221 ft wide.

Who owns I 25 Ml over W. Myrtle Pl. / RR?

It is owned by the State Highway Agency.