US Bridges

US 136 E over Is 29

Poor

Atchison County, Missouri · S 32 T 65 N R 41 W · Structure no. 2054

Built
1969
56 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
321 ft
2 main spans
Daily traffic
2,350
2024 count
Owner
State
State Highway Agency

About this bridge

US 136 E over Is 29 is a steel continuous stringer/multi-beam or girder carrying US 136 E over Is 29 in Atchison County, Missouri. It was built in 1969, so it is 56 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,350 vehicles a day, roughly 33% of them trucks, projected to reach 4,935 by 2044. The structure is 321 ft (97.8 m) long and 41 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesUS 136 E
CrossesIs 29
LocationS 32 T 65 N R 41 W
RouteU.S. Route 136
CountyAtchison County
StateMissouri
Coordinates40.4073, -95.5555
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 20
Structure length321 ft (97.8 m)
Longest span105 ft (32 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2024)
Projected traffic4,935 by 2044
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.9 mi (24 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 136 E over Is 29 built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 136 E over Is 29 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does US 136 E over Is 29 carry?

About 2,350 vehicles per day (2024 count), of which roughly 33% are trucks.

How long is US 136 E over Is 29?

The structure is 321 ft (97.8 m) long with a longest span of 105 ft (32 m) and a deck 41 ft wide.

Who owns US 136 E over Is 29?

It is owned by the State Highway Agency.