US Bridges

I 70 Ml over City Street

Good

Clear Creek County, Colorado · At Georgetown · Structure no. F-14-AR

Built
1989
36 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
33,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 70 Ml over City Street is a prestressed concrete box beam or girders - multiple carrying I 70 Ml over City Street in Clear Creek County, Colorado. It was built in 1989, so it is 36 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 33,000 vehicles a day, roughly 9% of them trucks, projected to reach 41,580 by 2040. The structure is 103 ft (31.4 m) long and 117 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesI 70 Ml
CrossesCity Street
LocationAt Georgetown
RouteInterstate 70A
Coordinates39.71519, -105.69645
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.3 US tons
Inventory rating37.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span100 ft (30.6 m)
Deck width117 ft (35.7 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,000 (2020)
Projected traffic41,580 by 2040
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 70 Ml over City Street built?

It was built in 1989, making it 36 years old in 2025.

What condition is I 70 Ml over City Street in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does I 70 Ml over City Street carry?

About 33,000 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is I 70 Ml over City Street?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.6 m) and a deck 117 ft wide.

Who owns I 70 Ml over City Street?

It is owned by the State Highway Agency.