US Bridges

US77 HWY over Big Blue River Drainage

Fair

Marshall County, Kansas · 4.78 MI E Wjct K9 · Structure no. 999907700580121

Built
1931
94 years old, rebuilt 1963
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
2,523
2023 count
Owner
State
State Highway Agency

About this bridge

US77 HWY over Big Blue River Drainage is a concrete culvert carrying US77 HWY over Big Blue River Drainage in Marshall County, Kansas. It was built in 1931 and reconstructed in 1963, so it is 94 years old, older than the Kansas average of 52.8 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 2,523 vehicles a day, roughly 10% of them trucks, projected to reach 2,574 by 2044. The structure is 21 ft (6.3 m) long and 63 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesUS77 HWY
CrossesBig Blue River Drainage
Location4.78 MI E Wjct K9
RouteU.S. Route 77
CountyMarshall County
StateKansas
Coordinates39.68306, -96.66361
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating22 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width63 ft (19.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,523 (2023)
Projected traffic2,574 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 US77 HWY over Big Blue River Drainage built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1963.

What condition is US77 HWY over Big Blue River Drainage 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 May 2023.

How much traffic does US77 HWY over Big Blue River Drainage carry?

About 2,523 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US77 HWY over Big Blue River Drainage?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 63 ft wide.

Who owns US77 HWY over Big Blue River Drainage?

It is owned by the State Highway Agency.