US Bridges

Rt a S over Is 229

FairPosted for load

Buchanan County, Missouri · S 35 T 57 N R 35 W · Structure no. 955

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
217 ft
4 main spans
Daily traffic
4,651
2024 count
Owner
State
State Highway Agency

About this bridge

Rt a S over Is 229 is a concrete continuous slab carrying Rt a S over Is 229 in Buchanan County, Missouri. It was built in 1965, so it is 60 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 4,651 vehicles a day, roughly 6% of them trucks, projected to reach 6,279 by 2044. The structure is 217 ft (66.1 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesRt a S
CrossesIs 229
LocationS 35 T 57 N R 35 W
RouteState Highway 0A
CountyBuchanan County
StateMissouri
Coordinates39.70999, -94.79621
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length217 ft (66.1 m)
Longest span60 ft (18.3 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,651 (2024)
Projected traffic6,279 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt a S over Is 229 built?

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

What condition is Rt a S over Is 229 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 August 2024.

How much traffic does Rt a S over Is 229 carry?

About 4,651 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Rt a S over Is 229?

The structure is 217 ft (66.1 m) long with a longest span of 60 ft (18.3 m) and a deck 32 ft wide.

Who owns Rt a S over Is 229?

It is owned by the State Highway Agency.