US Bridges

I-70 Highway over N Fork Solomon River

Good

Thomas County, Kansas · 3.50 MI SE of K-25 · Structure no. 999907000970201

Built
1965
60 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
82 ft
4 main spans
Daily traffic
6,350
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 Highway over N Fork Solomon River is a concrete culvert carrying I-70 Highway over N Fork Solomon River in Thomas County, Kansas. It was built in 1965, so it is 60 years old, older than the Kansas average of 52.8 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 6,350 vehicles a day, roughly 25% of them trucks, projected to reach 7,748 by 2044. The structure is 82 ft (25.1 m) long and 130 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-70 Highway
CrossesN Fork Solomon River
Location3.50 MI SE of K-25
RouteInterstate 70
StateKansas
Coordinates39.33639, -101.00694
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29 US tons
Inventory rating17 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length82 ft (25.1 m)
Longest span20 ft (6.1 m)
Deck width130 ft (39.5 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,350 (2023)
Projected traffic7,748 by 2044
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Highway over N Fork Solomon River built?

It was built in 1965, making it 60 years old in 2025.

What condition is I-70 Highway over N Fork Solomon River 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 2024.

How much traffic does I-70 Highway over N Fork Solomon River carry?

About 6,350 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-70 Highway over N Fork Solomon River?

The structure is 82 ft (25.1 m) long with a longest span of 20 ft (6.1 m) and a deck 130 ft wide.

Who owns I-70 Highway over N Fork Solomon River?

It is owned by the State Highway Agency.