US Bridges

Ia 16 over Sugar Creek

Fair

Lee County, Iowa · 0.3 Mi. W of Jct. US 218 · Structure no. 000000000033310

Built
1966
59 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
1,490
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 16 over Sugar Creek is a concrete continuous slab carrying Ia 16 over Sugar Creek in Lee County, Iowa. It was built in 1966, so it is 59 years old, older than the Iowa average of 45.5 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 1,490 vehicles a day, roughly 14% of them trucks, projected to reach 1,490 by 2042. The structure is 82 ft (25 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIa 16
CrossesSugar Creek
Location0.3 Mi. W of Jct. US 218
RouteState Highway 16
CountyLee County
StateIowa
Coordinates40.78451, -91.57149
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.7 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length82 ft (25 m)
Longest span31 ft (9.4 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,490 (2022)
Projected traffic1,490 by 2042
Trucks14%
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

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 Ia 16 over Sugar Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Ia 16 over Sugar Creek 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 March 2023.

How much traffic does Ia 16 over Sugar Creek carry?

About 1,490 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Ia 16 over Sugar Creek?

The structure is 82 ft (25 m) long with a longest span of 31 ft (9.4 m) and a deck 35 ft wide.

Who owns Ia 16 over Sugar Creek?

It is owned by the State Highway Agency.