US Bridges

US77 HWY over Big Blue River Drainage

Good

Marshall County, Kansas · 6.56 MI N Ejct K9 · Structure no. 999907700580141

Built
1936
89 years old, rebuilt 1960
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
2,130
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 1936 and reconstructed in 1960, so it is 89 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 2,130 vehicles a day, roughly 14% of them trucks, projected to reach 2,173 by 2044. The structure is 25 ft (7.6 m) long and 91 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesUS77 HWY
CrossesBig Blue River Drainage
Location6.56 MI N Ejct K9
RouteU.S. Route 77
StateKansas
Coordinates39.7825, -96.6475
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width91 ft (27.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,130 (2023)
Projected traffic2,173 by 2044
Trucks14%
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 1936, making it 89 years old in 2025. It was reconstructed in 1960.

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

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

About 2,130 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US77 HWY over Big Blue River Drainage?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 91 ft wide.

Who owns US77 HWY over Big Blue River Drainage?

It is owned by the State Highway Agency.