US Bridges

Lillie Rd. over Indian Creek

Fair

Linn County, Iowa · 085063204 · Structure no. 000000000222231

Built
1996
29 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
49 ft
2 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

Lillie Rd. over Indian Creek is a wood or timber slab carrying Lillie Rd. over Indian Creek in Linn County, Iowa. It was built in 1996, so it is 29 years old, younger 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 20 vehicles a day, roughly 40% of them trucks, projected to reach 20 by 2044. The structure is 49 ft (14.9 m) long and 24 ft wide.

CarriesLillie Rd.
CrossesIndian Creek
Location085063204
RouteCounty Highway 0
StateIowa
Coordinates42.12749, -91.56974
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating63.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 by 2044
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Lillie Rd. over Indian Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Lillie Rd. over Indian 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 September 2024.

How much traffic does Lillie Rd. over Indian Creek carry?

About 20 vehicles per day (2022 count), of which roughly 40% are trucks.

How long is Lillie Rd. over Indian Creek?

The structure is 49 ft (14.9 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Lillie Rd. over Indian Creek?

It is owned by the County Highway Agency.