US Bridges

US-400 HWY over Verdigris River

Good

Montgomery County, Kansas · 1.17 MI E of 75/400 JCT · Structure no. 999940000630811

Built
1997
28 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
503 ft
5 main spans
Daily traffic
3,909
2023 count
Owner
State
State Highway Agency

About this bridge

US-400 HWY over Verdigris River is a prestressed concrete continuous stringer/multi-beam or girder carrying US-400 HWY over Verdigris River in Montgomery County, Kansas. It was built in 1997, so it is 28 years old, younger 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 3,909 vehicles a day, roughly 24% of them trucks, projected to reach 4,770 by 2044. The structure is 503 ft (153.2 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS-400 HWY
CrossesVerdigris River
Location1.17 MI E of 75/400 JCT
RouteU.S. Route 400
StateKansas
Coordinates37.35583, -95.675
Functional classRural Principal Arterial - Other

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating99 US tons
Inventory rating55.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length503 ft (153.2 m)
Longest span100 ft (30.5 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,909 (2023)
Projected traffic4,770 by 2044
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 US-400 HWY over Verdigris River built?

It was built in 1997, making it 28 years old in 2025.

What condition is US-400 HWY over Verdigris 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 March 2023.

How much traffic does US-400 HWY over Verdigris River carry?

About 3,909 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is US-400 HWY over Verdigris River?

The structure is 503 ft (153.2 m) long with a longest span of 100 ft (30.5 m) and a deck 46 ft wide.

Who owns US-400 HWY over Verdigris River?

It is owned by the State Highway Agency.