US Bridges

FAS-1479 (CH-34) over Branch Timber Creek

Fair

McLean County, Illinois · 1 Mile E Shirley · Structure no. 057341300000000

Built
1962
63 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
62 ft
3 main spans
Daily traffic
600
2024 count
Owner
County
County Highway Agency

About this bridge

FAS-1479 (CH-34) over Branch Timber Creek is a concrete continuous slab carrying FAS-1479 (CH-34) over Branch Timber Creek in McLean County, Illinois. It was built in 1962, so it is 63 years old, older than the Illinois average of 45.3 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 600 vehicles a day, roughly 22% of them trucks, projected to reach 480 by 2046. The structure is 62 ft (18.9 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS-1479 (CH-34)
CrossesBranch Timber Creek
Location1 Mile E Shirley
RouteCounty Highway 0
CountyMcLean County
StateIllinois
Coordinates40.40777, -89.03177
Functional classUrban Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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 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 rating59 US tons
Inventory rating35.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length62 ft (18.9 m)
Longest span23 ft (7 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2024)
Projected traffic480 by 2046
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
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 FAS-1479 (CH-34) over Branch Timber Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is FAS-1479 (CH-34) over Branch Timber 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 October 2023.

How much traffic does FAS-1479 (CH-34) over Branch Timber Creek carry?

About 600 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is FAS-1479 (CH-34) over Branch Timber Creek?

The structure is 62 ft (18.9 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.

Who owns FAS-1479 (CH-34) over Branch Timber Creek?

It is owned by the County Highway Agency.