US Bridges

FM 1100 over Elm Creek

Good

Bastrop County, Texas · 1.0 MI W of SH 95 · Structure no. 140110123402002

Built
1955
70 years old, rebuilt 2013
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
35 ft
4 main spans
Daily traffic
5,735
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1100 over Elm Creek is a concrete culvert carrying FM 1100 over Elm Creek in Bastrop County, Texas. It was built in 1955 and reconstructed in 2013, so it is 70 years old, older 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 5,735 vehicles a day, roughly 2% of them trucks, projected to reach 8,029 by 2042. The structure is 35 ft (10.7 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 1100
CrossesElm Creek
Location1.0 MI W of SH 95
RouteState Highway 1100
StateTexas
Coordinates30.36249, -97.39828
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span8 ft (2.4 m)
Deck width41 ft (12.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,735 (2023)
Projected traffic8,029 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1100 over Elm Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2013.

What condition is FM 1100 over Elm 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 November 2024.

How much traffic does FM 1100 over Elm Creek carry?

About 5,735 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is FM 1100 over Elm Creek?

The structure is 35 ft (10.7 m) long with a longest span of 8 ft (2.4 m) and a deck 41 ft wide.

Who owns FM 1100 over Elm Creek?

It is owned by the State Highway Agency.