US Bridges

I 70 Ml Wbnd over Republican River

Fair

Kit Carson County, Colorado · 3.1 MI E of Flagler · Structure no. G-24-U

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
198 ft
2 main spans
Daily traffic
5,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 70 Ml Wbnd over Republican River is a prestressed concrete stringer/multi-beam or girder carrying I 70 Ml Wbnd over Republican River in Kit Carson County, Colorado. It was built in 1975, so it is 50 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 5,000 vehicles a day, roughly 27% of them trucks, projected to reach 5,900 by 2040. The structure is 198 ft (60.5 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 70 Ml Wbnd
CrossesRepublican River
Location3.1 MI E of Flagler
RouteInterstate 70A
Coordinates39.27469, -103.0066
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.1 US tons
Inventory rating42.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length198 ft (60.5 m)
Longest span95 ft (29 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2020)
Projected traffic5,900 by 2040
Trucks27%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 70 Ml Wbnd over Republican River built?

It was built in 1975, making it 50 years old in 2025.

What condition is I 70 Ml Wbnd over Republican River 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 November 2023.

How much traffic does I 70 Ml Wbnd over Republican River carry?

About 5,000 vehicles per day (2020 count), of which roughly 27% are trucks.

How long is I 70 Ml Wbnd over Republican River?

The structure is 198 ft (60.5 m) long with a longest span of 95 ft (29 m) and a deck 45 ft wide.

Who owns I 70 Ml Wbnd over Republican River?

It is owned by the State Highway Agency.