US Bridges

US98 SR30 over St. Andrews Bay

Fair

Bay County, Florida · West-Panama City Limit · Structure no. 460112

Built
2004
21 years old
Condition
Fair
inspected September 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
3,384 ft
12 main spans
Daily traffic
34,066
2022 count
Owner
State
State Highway Agency

About this bridge

US98 SR30 over St. Andrews Bay is a prestressed concrete continuous segmental box girder carrying US98 SR30 over St. Andrews Bay in Bay County, Florida. It was built in 2004, so it is 21 years old, younger 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 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 34,066 vehicles a day, roughly 6% of them trucks, projected to reach 59,104 by 2044. The structure is 3,384 ft (1,031.5 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS98 SR30
CrossesSt. Andrews Bay
LocationWest-Panama City Limit
RouteU.S. Route 98
StateFlorida
Coordinates30.18792, -85.74224
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating41.8 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans12
Design loadH 20
Structure length3,384 ft (1,031.5 m)
Longest span330 ft (100.6 m)
Deck width80 ft (24.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,066 (2022)
Projected traffic59,104 by 2044
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US98 SR30 over St. Andrews Bay built?

It was built in 2004, making it 21 years old in 2025.

What condition is US98 SR30 over St. Andrews 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 September 2023.

How much traffic does US98 SR30 over St. Andrews Bay carry?

About 34,066 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is US98 SR30 over St. Andrews Bay?

The structure is 3,384 ft (1,031.5 m) long with a longest span of 330 ft (100.6 m) and a deck 80 ft wide.

Who owns US98 SR30 over St. Andrews Bay?

It is owned by the State Highway Agency.