Ia 16 over Branch Sugar Creek

Good

Lee County, Iowa · 1.1 Mi. E of Jct. US 218. · Structure no. 000000000033321

Built: 1987; 38 years old
Condition: Good; inspected March 2023
Type: Culvert; Concrete Continuous
Length: 32 ft; 3 main spans
Daily traffic: 1,220; 2022 count
Owner: State; State Highway Agency

About this bridge

Ia 16 over Branch Sugar Creek is a concrete continuous culvert carrying Ia 16 over Branch Sugar Creek in Lee County, Iowa. It was built in 1987, so it is 38 years old, younger than the Iowa average of 45.5 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 1,220 vehicles a day, roughly 15% of them trucks, projected to reach 1,220 by 2042. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesIa 16

CrossesBranch Sugar Creek

Location1.1 Mi. E of Jct. US 218.

RouteState Highway 16

CountyLee County

StateIowa

Coordinates40.78434, -91.54257

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.

Component	Rating	Meaning
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert	7 Good	Some minor problems.

Last inspectionMarch 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Waterway adequacy6: Equal to present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating42.1 US tons

Inventory rating32.5 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans3

Design loadHS 20

Structure length32 ft (9.8 m)

Longest span10 ft (3 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,220 (2022)

Projected traffic1,220 by 2042

Trucks15%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed6.2 mi (10 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 Branch Sugar Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Ia 16 over Branch Sugar Creek 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 March 2023.

How much traffic does Ia 16 over Branch Sugar Creek carry?

About 1,220 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Ia 16 over Branch Sugar Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns Ia 16 over Branch Sugar Creek?

It is owned by the State Highway Agency.