US Bridges

Rt O E over Gasconade Rvr

PoorPosted for load

Laclede County, Missouri · S 7 T 32 N R 13 W · Structure no. 7123

Built
1958
67 years old
Condition
Poor
inspected August 2023
Type
Truss - Thru
Steel
Length
472 ft
1 main span
Daily traffic
295
2024 count
Owner
State
State Highway Agency

About this bridge

Rt O E over Gasconade Rvr is a steel truss - thru carrying Rt O E over Gasconade Rvr in Laclede County, Missouri. It was built in 1958, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 295 vehicles a day, roughly 12% of them trucks, projected to reach 443 by 2044. The structure is 472 ft (143.9 m) long and 22 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesRt O E
CrossesGasconade Rvr
LocationS 7 T 32 N R 13 W
RouteState Highway 0O
Coordinates37.4875, -92.40538
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.8 US tons
Inventory rating8.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadH 10
Structure length472 ft (143.9 m)
Longest span121 ft (36.9 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic295 (2024)
Projected traffic443 by 2044
Trucks12%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$3.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt O E over Gasconade Rvr built?

It was built in 1958, making it 67 years old in 2025.

What condition is Rt O E over Gasconade Rvr 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 August 2023.

How much traffic does Rt O E over Gasconade Rvr carry?

About 295 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Rt O E over Gasconade Rvr?

The structure is 472 ft (143.9 m) long with a longest span of 121 ft (36.9 m) and a deck 22 ft wide.

Who owns Rt O E over Gasconade Rvr?

It is owned by the State Highway Agency.