US Bridges

Tanner Bridge RD over Moreau Rvr

Poor

Cole County, Missouri · S 25 T 44 N R 12 W · Structure no. 14891

Built
1960
65 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
308 ft
3 main spans
Daily traffic
1,671
2024 count
Owner
County
County Highway Agency

About this bridge

Tanner Bridge RD over Moreau Rvr is a steel stringer/multi-beam or girder carrying Tanner Bridge RD over Moreau Rvr in Cole 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 1,671 vehicles a day, roughly 10% of them trucks, projected to reach 2,841 by 2044. The structure is 308 ft (93.9 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesTanner Bridge RD
CrossesMoreau Rvr
LocationS 25 T 44 N R 12 W
RouteCounty Highway 78
Coordinates38.52914, -92.1921
Functional classRural Local

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating21.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadOther
Structure length308 ft (93.9 m)
Longest span100 ft (30.5 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,671 (2024)
Projected traffic2,841 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$2.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tanner Bridge RD over Moreau Rvr built?

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

What condition is Tanner Bridge RD over Moreau 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 October 2023.

How much traffic does Tanner Bridge RD over Moreau Rvr carry?

About 1,671 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Tanner Bridge RD over Moreau Rvr?

The structure is 308 ft (93.9 m) long with a longest span of 100 ft (30.5 m) and a deck 24 ft wide.

Who owns Tanner Bridge RD over Moreau Rvr?

It is owned by the County Highway Agency.