US Bridges

Morrison RD over Big Branch

Fair

Morgan County, Missouri · S 2 T 44 N R 18 W · Structure no. 18804

Built
1979
46 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
48 ft
4 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Morrison RD over Big Branch is a concrete slab carrying Morrison RD over Big Branch in Morgan County, Missouri. It was built in 1979, so it is 46 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.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 54 by 2043. The structure is 48 ft (14.6 m) long and 15 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesMorrison RD
CrossesBig Branch
LocationS 2 T 44 N R 18 W
RouteCounty Highway 200
CountyMorgan County
StateMissouri
Coordinates38.60436, -92.87714
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length48 ft (14.6 m)
Longest span12 ft (3.7 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic54 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$260,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Morrison RD over Big Branch built?

It was built in 1979, making it 46 years old in 2025.

What condition is Morrison RD over Big Branch 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 Morrison RD over Big Branch carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Morrison RD over Big Branch?

The structure is 48 ft (14.6 m) long with a longest span of 12 ft (3.7 m) and a deck 15 ft wide.

Who owns Morrison RD over Big Branch?

It is owned by the County Highway Agency.