US Bridges

SR 31 over Withlacoochee River

Good

Madison County, Florida · App 4 MI S of Clyattville · Structure no. 35GA68

Built
2015
10 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
780 ft
6 main spans
Daily traffic
1,660
2020 count
Owner
State
State Highway Agency

About this bridge

SR 31 over Withlacoochee River is a prestressed concrete stringer/multi-beam or girder carrying SR 31 over Withlacoochee River in Madison County, Florida. It was built in 2015, so it is 10 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,660 vehicles a day, roughly 16% of them trucks, projected to reach 7,500 by 2042. The structure is 780 ft (237.7 m) long and 43 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesSR 31
CrossesWithlacoochee River
LocationApp 4 MI S of Clyattville
RouteState Highway 31
CountyMadison County
StateFlorida
Coordinates30.63562, -83.31153
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.4 US tons
Inventory rating41.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length780 ft (237.7 m)
Longest span140 ft (42.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,660 (2020)
Projected traffic7,500 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$103.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 31 over Withlacoochee River built?

It was built in 2015, making it 10 years old in 2025.

What condition is SR 31 over Withlacoochee River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does SR 31 over Withlacoochee River carry?

About 1,660 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is SR 31 over Withlacoochee River?

The structure is 780 ft (237.7 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.

Who owns SR 31 over Withlacoochee River?

It is owned by the State Highway Agency.