US Bridges

US98 SR30 over ST Marks River

Good

Wakulla County, Florida · 0.3 Mile East of SR267 · Structure no. 590056

Built
2001
24 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
285 ft
3 main spans
Daily traffic
1,950
2022 count
Owner
State
State Highway Agency

About this bridge

US98 SR30 over ST Marks River is a prestressed concrete stringer/multi-beam or girder carrying US98 SR30 over ST Marks River in Wakulla County, Florida. It was built in 2001, so it is 24 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 1,950 vehicles a day, roughly 21% of them trucks, projected to reach 3,383 by 2044. The structure is 285 ft (87 m) long and 46 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesUS98 SR30
CrossesST Marks River
Location0.3 Mile East of SR267
RouteU.S. Route 98
StateFlorida
Coordinates30.19906, -84.17812
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.8 US tons
Inventory rating52.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length285 ft (87 m)
Longest span95 ft (29 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2022)
Projected traffic3,383 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US98 SR30 over ST Marks River built?

It was built in 2001, making it 24 years old in 2025.

What condition is US98 SR30 over ST Marks 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 September 2024.

How much traffic does US98 SR30 over ST Marks River carry?

About 1,950 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US98 SR30 over ST Marks River?

The structure is 285 ft (87 m) long with a longest span of 95 ft (29 m) and a deck 46 ft wide.

Who owns US98 SR30 over ST Marks River?

It is owned by the State Highway Agency.