US Bridges

SW Frank Ross RD over Morgan Br

Fair

DeKalb County, Missouri · S 8 T 58 N R 32 W · Structure no. 21824

Built
1910
115 years old, rebuilt 1983
Condition
Fair
inspected January 2025
Type
Girder and Floorbeam System
Steel
Length
52 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

SW Frank Ross RD over Morgan Br is a steel girder and floorbeam system carrying SW Frank Ross RD over Morgan Br in DeKalb County, Missouri. It was built in 1910 and reconstructed in 1983, so it is 115 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 52 ft (15.8 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSW Frank Ross RD
CrossesMorgan Br
LocationS 8 T 58 N R 32 W
RouteCounty Highway 325
CountyDeKalb County
StateMissouri
Coordinates39.86428, -94.52631
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Frank Ross RD over Morgan Br built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1983.

What condition is SW Frank Ross RD over Morgan Br 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 January 2025.

How much traffic does SW Frank Ross RD over Morgan Br carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW Frank Ross RD over Morgan Br?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 18 ft wide.

Who owns SW Frank Ross RD over Morgan Br?

It is owned by the County Highway Agency.