US Bridges

CR 181 over Thomas Bay

Fair

Holmes County, Florida · 4.9 MI North of US90/SR10 · Structure no. 520034

Built
1940
85 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
950
2023 count
Owner
County
County Highway Agency

About this bridge

CR 181 over Thomas Bay is a concrete culvert carrying CR 181 over Thomas Bay in Holmes County, Florida. It was built in 1940, so it is 85 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 950 vehicles a day, roughly 11% of them trucks, projected to reach 1,045 by 2043. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 181
CrossesThomas Bay
Location4.9 MI North of US90/SR10
RouteCounty Highway 181
CountyHolmes County
StateFlorida
Coordinates30.81045, -85.91421
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length31 ft (9.5 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2023)
Projected traffic1,045 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 CR 181 over Thomas Bay built?

It was built in 1940, making it 85 years old in 2025.

What condition is CR 181 over Thomas Bay 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 February 2025.

How much traffic does CR 181 over Thomas Bay carry?

About 950 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is CR 181 over Thomas Bay?

The structure is 31 ft (9.5 m) long with a longest span of 11 ft (3.3 m).

Who owns CR 181 over Thomas Bay?

It is owned by the County Highway Agency.