US Bridges

US-98 (sr 700) over Istokpoga Canal

Fair

Highlands County, Florida · 17.4MI East of US-27 · Structure no. 090032

Built
1950
75 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
225 ft
9 main spans
Daily traffic
3,600
2023 count
Owner
State
State Highway Agency

About this bridge

US-98 (sr 700) over Istokpoga Canal is a steel continuous stringer/multi-beam or girder carrying US-98 (sr 700) over Istokpoga Canal in Highlands County, Florida. It was built in 1950, so it is 75 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 3,600 vehicles a day, roughly 25% of them trucks, projected to reach 6,246 by 2042. The structure is 225 ft (68.6 m) long and 33 ft wide. If it were closed, the detour would be 30.4 mi (49 km).

Location

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CarriesUS-98 (sr 700)
CrossesIstokpoga Canal
Location17.4MI East of US-27
RouteU.S. Route 98
CountyHighlands County
StateFlorida
Coordinates27.39912, -81.16234
Functional classRural Principal Arterial - Other

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadH 15
Structure length225 ft (68.6 m)
Longest span25 ft (7.5 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2023)
Projected traffic6,246 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed30.4 mi (49 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 US-98 (sr 700) over Istokpoga Canal built?

It was built in 1950, making it 75 years old in 2025.

What condition is US-98 (sr 700) over Istokpoga Canal 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 April 2023.

How much traffic does US-98 (sr 700) over Istokpoga Canal carry?

About 3,600 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is US-98 (sr 700) over Istokpoga Canal?

The structure is 225 ft (68.6 m) long with a longest span of 25 ft (7.5 m) and a deck 33 ft wide.

Who owns US-98 (sr 700) over Istokpoga Canal?

It is owned by the State Highway Agency.