US Bridges

FM 3400 over Cottonwood Creek

Good

McLennan County, Texas · 0.6 MI S of FM 434 · Structure no. 091610083314038

Built
1982
43 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
121 ft
4 main spans
Daily traffic
3,458
2020 count
Owner
State
State Highway Agency

About this bridge

FM 3400 over Cottonwood Creek is a concrete stringer/multi-beam or girder carrying FM 3400 over Cottonwood Creek in McLennan County, Texas. It was built in 1982, so it is 43 years old, younger than the Texas average of 44.4 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 3,458 vehicles a day, roughly 14% of them trucks, projected to reach 5,310 by 2033. The structure is 121 ft (36.9 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 3400
CrossesCottonwood Creek
Location0.6 MI S of FM 434
RouteState Highway 3400
CountyMcLennan County
StateTexas
Coordinates31.5167, -97.08922
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span30 ft (9.1 m)
Deck width42 ft (12.9 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,458 (2020)
Projected traffic5,310 by 2033
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$800,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 3400 over Cottonwood Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is FM 3400 over Cottonwood 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 February 2023.

How much traffic does FM 3400 over Cottonwood Creek carry?

About 3,458 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is FM 3400 over Cottonwood Creek?

The structure is 121 ft (36.9 m) long with a longest span of 30 ft (9.1 m) and a deck 42 ft wide.

Who owns FM 3400 over Cottonwood Creek?

It is owned by the State Highway Agency.