US Bridges

Gunn RD over Straight Fk Moreau

FairPosted for load

Morgan County, Missouri · S 36 T 43 N R 18 W · Structure no. 15098

Built
1930
95 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

Gunn RD over Straight Fk Moreau is a concrete slab carrying Gunn RD over Straight Fk Moreau in Morgan County, Missouri. It was built in 1930, so it is 95 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 6 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 45 by 2043. The structure is 32 ft (9.8 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesGunn RD
CrossesStraight Fk Moreau
LocationS 36 T 43 N R 18 W
RouteCounty Highway 85
CountyMorgan County
StateMissouri
Coordinates38.44312, -92.85227
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width14 ft (4.4 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic45 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$311,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gunn RD over Straight Fk Moreau built?

It was built in 1930, making it 95 years old in 2025.

What condition is Gunn RD over Straight Fk Moreau 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 November 2024.

How much traffic does Gunn RD over Straight Fk Moreau carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Gunn RD over Straight Fk Moreau?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 14 ft wide.

Who owns Gunn RD over Straight Fk Moreau?

It is owned by the County Highway Agency.