US Bridges

I 70 Strasburg Spu over I 70 Ml

Fair

Arapahoe County, Colorado · 4.8 MI E of Ramp to US 36 · Structure no. F-19-BA

Built
1962
63 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
222 ft
4 main spans
Daily traffic
3,700
2020 count
Owner
State
State Highway Agency

About this bridge

I 70 Strasburg Spu over I 70 Ml is a concrete continuous tee beam carrying I 70 Strasburg Spu over I 70 Ml in Arapahoe County, Colorado. It was built in 1962, so it is 63 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 3,700 vehicles a day, roughly 6% of them trucks, projected to reach 5,439 by 2040. The structure is 222 ft (67.7 m) long and 32 ft wide.

CarriesI 70 Strasburg Spu
CrossesI 70 Ml
Location4.8 MI E of Ramp to US 36
RouteState Highway 70M
Coordinates39.73456, -104.32626
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span66 ft (20.1 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2020)
Projected traffic5,439 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 70 Strasburg Spu over I 70 Ml built?

It was built in 1962, making it 63 years old in 2025.

What condition is I 70 Strasburg Spu over I 70 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 April 2023.

How much traffic does I 70 Strasburg Spu over I 70 Ml carry?

About 3,700 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I 70 Strasburg Spu over I 70 Ml?

The structure is 222 ft (67.7 m) long with a longest span of 66 ft (20.1 m) and a deck 32 ft wide.

Who owns I 70 Strasburg Spu over I 70 Ml?

It is owned by the State Highway Agency.