US Bridges

Rt Y S over Is 70

Poor

Lafayette County, Missouri · S 6 T 48 N R 24 W · Structure no. 99

Built
1960
65 years old
Condition
Poor
inspected January 2025
Type
Slab
Concrete Continuous
Length
207 ft
4 main spans
Daily traffic
924
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Y S over Is 70 is a concrete continuous slab carrying Rt Y S over Is 70 in Lafayette County, Missouri. It was built in 1960, so it is 65 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 3 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 924 vehicles a day, roughly 10% of them trucks, projected to reach 1,340 by 2044. The structure is 207 ft (63.1 m) long and 27 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesRt Y S
CrossesIs 70
LocationS 6 T 48 N R 24 W
RouteState Highway 0Y
Coordinates38.98474, -93.49418
Functional classRural Major Collector

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length207 ft (63.1 m)
Longest span58 ft (17.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic924 (2024)
Projected traffic1,340 by 2044
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt Y S over Is 70 built?

It was built in 1960, making it 65 years old in 2025.

What condition is Rt Y S over Is 70 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 January 2025.

How much traffic does Rt Y S over Is 70 carry?

About 924 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rt Y S over Is 70?

The structure is 207 ft (63.1 m) long with a longest span of 58 ft (17.7 m) and a deck 27 ft wide.

Who owns Rt Y S over Is 70?

It is owned by the State Highway Agency.