US Bridges

County RD 1710 over Dry Br of Howell C

Fair

Howell County, Missouri · S 6 T 24 N R 8 W · Structure no. 24631

Built
1922
103 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
120
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 1710 over Dry Br of Howell C is a concrete slab carrying County RD 1710 over Dry Br of Howell C in Howell County, Missouri. It was built in 1922, so it is 103 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 120 vehicles a day, roughly 10% of them trucks, projected to reach 174 by 2043. The structure is 23 ft (7 m) long and 21 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty RD 1710
CrossesDry Br of Howell C
LocationS 6 T 24 N R 8 W
RouteCounty Highway 521
CountyHowell County
StateMissouri
Coordinates36.7795, -91.882
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width21 ft (6.3 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2023)
Projected traffic174 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$162,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 1710 over Dry Br of Howell C built?

It was built in 1922, making it 103 years old in 2025.

What condition is County RD 1710 over Dry Br of Howell C 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 County RD 1710 over Dry Br of Howell C carry?

About 120 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 1710 over Dry Br of Howell C?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 21 ft wide.

Who owns County RD 1710 over Dry Br of Howell C?

It is owned by the County Highway Agency.